TOP TEN UNIVERSITIES IN THE WORLD

Top Ten Universities

• Top ten universities in the world
• Top ten universities in Asia
• Top ten universities in China
• Top ten universities in the mainland of China
• Top ten universities in USA
• Top ten universities in UK
• Top ten universities in Australia
• Top ten universities in Canada

• How our university compares with others (according to The Times Higher Education Supplement, 2008):
  • 1st among universities in China
  • 3rd among universities in Asia
  • 26th among universities in the World

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	Disclaimer 1: The information is extracted from well-known international rankings for the convenience of students. I may not have worked with or made academic visits to these universities, except the highlighted few. These rankings do not necessarily represent my personal view. Please express any concerns directly to the original editors of the lists rather than to me. — Prof. T.H. Tse

	Disclaimer 2: A webpage very similar in format and contents to this one is found at Simoka.com, Canada. It has been copied verbatim from my previous version, including disclaminer 1 but with my name removed. I accept no responsibility for any obsolete information at the plagiarized webpage. — Prof. T.H. Tse

TOP TEN UNIVERSITIES IN THE WORLD

According to The Times Higher Education Supplement, 2008:

Rank	University
1	Harvard University, USA
2	Yale University, USA
3	University of Cambridge, UK
4	University of Oxford, UK
5	California Institute of Technology, USA
6	Imperial College London, UK
7	University College London, UK
8	The University of Chicago, USA
9	Massachusetts Institute of Technology, USA
10	Columbia University, USA

TOP TEN UNIVERSITIES IN ASIA

According to The Times Higher Education Supplement, 2008:

Rank	University
1	The University of Tokyo, Japan
2	Kyoto University, Japan
3	The University of Hong Kong, Hong Kong
4	National University of Singapore, Singapore
5	The Hong Kong University of Science and Technology, Hong Kong
6	The Chinese University of Hong Kong, Hong Kong
7	Osaka University, Japan
8	Peking University, China
8	Seoul National University, South Korea
10	Tsinghua University, China

TOP TEN UNIVERSITIES IN CHINA

According to The Times Higher Education Supplement, 2008:

Rank	University
1	The University of Hong Kong
2	The Hong Kong University of Science and Technology
3	The Chinese University of Hong Kong
4	Peking University
5	Tsinghua University
6	Fudan University
7	University of Science and Technology of China
8	Nanjing University
9	Shanghai Jiao Tong University
10	City University of Hong Kong

TOP TEN UNIVERSITIES IN THE MAINLAND OF CHINA

According to netbig.com, 2008:

Rank	University
1	Tsinghua University
2	Peking University
3	Zhejiang University
4	University of Science and Technology of China
5	Nanjing University
6	Fudan University
7	Shanghai Jiao Tong University
8	Beijing Normal University
9	Harbin Insititue of Technology
10	Nan'kai University
10	Renmin University of China

TOP TEN UNIVERSITIES IN USA

According to America's Best Colleges, US News, 2009:

Rank	University
1	Harvard University
2	Princeton University
3	Yale University
4	Massachusetts Institute of Technology
4	Stanford University
6	California Institute of Technology
6	University of Pennsylvania
8	Columbia University
8	Duke University
8	The University of Chicago

TOP TEN UNIVERSITIES IN UK

According to Good University Guide, Times Online, 2009:

Rank	University
1	University of Oxford
2	University of Cambridge
3	Imperial College London
4	London School of Economics
5	University of St. Andrews
6	University of Warwick
7	University College London
8	Durham University
9	The University of York
10	Bristol University

According to The Guardian University Guide, 2009:

Rank	University
1	University of Oxford
2	University of Cambridge
3	London School of Economics
4	University of Warwick
5	University of St. Andrews
6	Imperial College London
7	University College London
8	School of Oriental and African Studies, London
9	University of Edinburgh
10	Loughborough University

TOP TEN UNIVERSITIES IN AUSTRALIA

According to The Times Higher Education Supplement, 2008:

Rank	University
1	Australian National University
2	The University of Sydney
3	The University of Melbourne
4	The University of Queensland
5	The University of New South Wales
6	Monash University
7	The University of Western Australia
8	The University of Adelaide
9	Macquarie University
10	RMIT University

TOP TEN UNIVERSITIES IN CANADA

According to Maclean's Guide to Canadian Universities, November 2007: Medical Doctoral Category: Universities with "a broad range of Ph.D. programs and research, as well as medical schools."

Rank	University
1	McGill University
2	The University of British Columbia
3	Queen's University
4	University of Toronto
5	University of Alberta
6	McMaster University
7	The University of Western Ontario
8	Dalhousie University
9	University of Ottawa
10	University of Calgary

According to Canada's Top 50 Research Universities, Research Inforsource Inc., 2007:

Rank	University
1	University of Toronto
2	Université de Montréal
3	The University of British Columbia
4	McGill University
5	University of Alberta
6	McMaster University
7	University of Calgary
8	Université Laval
9	University of Ottawa
10	The University of Western Ontario

Nuevo: MBA en Latinoamérica.

http://www.topmba.com/research/global_200_business_schools/top_business_schools_2009/latin_america

Latin America

4.7. Latin America
Middle income (GDP/capita) countries such as Mexico, Brazil, Chile and Argentina cannot afford any longer to compete on the basis of traditional strategies and polices such as low cost of labor and foreign investment-fuelled development. A new paradigm is needed to compete with China and India and in particular, decision makers need to undertake change strategies and transform organizations and institutions to operate based on high value added, entrepreneurship based wealth creation, and innovation propelled economic activity. This paradigm is creating a massive demand for MBA educated graduates across the region.

The majority of employers in Latin America are still looking to hire MBAs educated at the best international business schools in North America and Europe. What local demand exists tends to be on a country basis with few employers recruiting across borders within the region.

Few business schools in Latin America have been successful in developing an international reputation. There is evidence that schools in Latin America are not internationalizing at the pace of their Asian counterparts.

Within the region 12 schools have made the cut into the Global Top 200 in 2008. A consistent picture of the most preferred schools has emerged in this research, year on year with a consistent number of employer respondents in Latin America and stable evaluations.

Once again, a Mexican institution tops the list, with EGADE at Tec de Monterrey just ahead of IPADE (Instituto de Estudios Panamericano de Alta Direcction de Empresa) which achieved 18 employer votes just ahead of F.Getulio Vargas in Bazil and ITAM (Instituto Technologico Autonomo de Mexico). This top cluster is also joined by Business School Sao Paulo, PUC Chile and INCAE Business School of Costa Rica (which has the highest percentage of international students - 85% - in the region) all with over 10 employer votes.

The remaining business schools in the region to feature in the Top 200 include: ESAN (Peru), IBMEC (Brazil), Universidad de Chile, IESA (Venezuela) and IAE (Argentina).

Employers’ top 10 preferred schools in the Latin America region are:

EGADE – Tecnologico de Monterrey (Mexico), IPADE Instituto de Estudios Panamericano de Alta Direcction de Empresa (Mexico), Fundação Getulio Vargas Business School (Brazil, ITAM Instituto Technologico Autonomo de Mexico (Mexico), INCAE (Costa Rica), BSP – Business School Sao Paulo (Brazil), Pontificia Universidad de Chile, ESAN (Peru), IESA and IBMEC (Brazil)

4.8. Table:

Schools in Latin America most favoured by employers School Name

Country

Regional Rank 2008/9

Regional Rank 2007/8

Employer Votes

Avg.GMAT Score

Avg. Years Work

Class Size 2008/9 - 2 Year Avg

Class Size 2008/9 - Index

EGADE-Tecnologico de Monterrey
Mex.
1
1
18.5
11
560
3
50

IPADE business school
Mex.
2
2
18.5
11
610
4
87

BSP - Business School Sao Paulo
Brazil
6
n/a
13.5
8
n/a
n/a
n/a

F. Getulio Vargas
Brazil
3
3
15.5
9
n/a
n/a
n/a

INCAE Business School
Nicaragua
5
4
13.5
8
550
4
100

Instituto Tecnologico Autonomo de Mexico - ITAM
Mex.
4
5
15
9
580
7
50

ESAN
Peru
8
n/a
8.5
5
n/a
n/a
n/a

IAE - Universidad Austral
Arg.
12
n/a
5
3
620
5
48

Ibmec
Brazil
10
n/a
6
3
n/a
n/a
n/a

IESA
Venez.
9
n/a
7
4
n/a
n/a
n/a

Pontificia Universidad Catolica de Chile
Chile
7
n/a
11
6
500
4
30

Universidad de Chile
Chile
11
n/a
5.5
3
500
4
60

Source: QS Global 200 Business Schools 2009: The Employers’ Choice

EVERY VISITOR COUNTS:

Lanzamiento de Google Street View empieza a generar polémica en EUA

¿Google viola la intimidad?
El último programa de la compañía, el Street View, permite ver imágenes en 360º de distintos barrios y ciudades. Hace unos días fue lanzado y ya generó polémica
El programa funciona de manera similar al Google Earth, que contiene imágenes satelitales de todo el mundo. Street View es más preciso y permite ver imágenes de ciudades, haciendo posible conocer barrios antes de visitarlos, por ejemplo.

Sin embargo, las fotografías incluyen personas, lo cual ha generado que varias de ellas sintieran que se estaba violando su privacidad.

Por ejemplo, se han registrado los casos de una mujer tomando sol en bikini o de un hombre saliendo de un local nudista.

El programa por ahora sólo permite visualizar ciudades de los Estados Unidos y se espera por una respuesta al reclamo de los damnificados.

http://www.infobae.com/contenidos/368298-100884-0-Google-viola-la-intimidad

Servicio secreto redobla vigilancia a candidato negro: Quieren matar a Obama

Hillary Rodham Clinton, are the only presidential candidates who have Secret Service protection

Obama Gets Beefed-Up Protection

By Joseph Curl

January 7, 2008

[Excerpts]

MANCHESTER, N.H. — Secret Service presence has increased for Sen. Barack Obama since his dramatic win in Iowa, amid fears over the safety of the man seeking to become America's first black president.

The Illinois senator's security now rivals that of President Bush, with a dozen Secret Service agents wearing dark suits and earpieces leading bomb-sniffing dogs through event venues, sweeping all equipment brought by journalists and flanking the candidate as he plunges into crowds of supporters.

Mr. Obama, who reportedly resisted asking for Secret Service protection but personally requested a detail of agents after friends insisted, has been under federal watch since early last year. No one will say whether he has received an explicit death threat — his campaign said yesterday only that "we don't comment on security" — but officials have tracked racist chatter on white-supremacist Web sites.

The Internet is rife with theories that someone may try to assassinate the senator — typing into Google "assassinate Obama" brings up more than 2,000 hits. Anyone from Islamist terrorists to racist Americans to operatives of Halliburton and Blackwater are speculated about, but other, more nefarious Web sites are for real, according to reports from the Associated Press.

At his first morning event yesterday, at least a dozen plainclothes Secret Service agents, most with yellow pins on their lapels, stood guard in and around the Palace Theater, and, unlike other candidates touring the state, uniformed police were also on hand. The theater was emptied early so bomb-detecting dogs could sweep through, and journalists covering the event were corralled for inspection.

Http://washingtontimes.com/apps/pbcs.dll/article?AID=/20080107/NATION/415598644/1001
17 January 2008 : http://cryptome.org/obama-protect/obama-protect.htm y
New York Times, January 15, 2008:

US Secret Service

Protective Mission: http://www.secretservice.gov/protection.shtml
Headquarters: http://cryptome.org/sshq-eyeball.htm
Training Academy: http://www.eyeball-series.org/usssbig-eyeball.htm
Technical Security Division: http://cryptome.org/sstsd-eyeball.htm

Obama Protection Based on a review of AP photos from December 2007 to January 6, 2008, no other presidential candidate is being protected as carefully as Obama. The Secret Service is clearly worried, and may have information on threats. Secret Service agents never smile, never look at Obama, only the crowd. Up to five are now closely surrounding Obama, with more in the crowd and in the background, some likely under cover. The USSS Counter Sniper Squad may be on nearby roofs. Obama transport vehicles are armored. Protection against possible sabotage of aircraft is unknown -- recall Senator Wellstone.
AP Photos and Captions
Democratic presidential hopeful Sen. Barack Obama, D-Ill., arrives at the airport in San Antonio, Texas Tuesday, March 4, 2008, the day of the Texas presidential primary election. (AP Photo/Rick Bowmer)	[One of the few photos showing Secret Service protection for Michelle Obama.] Michelle Obama, wife of democratic presidential hopeful Sen. Barack Obama, D-Ill. greets supporters after speaking at a campaign rally for her husband at The Grand 1894 Opera House in Galveston on Monday Feb. 25, 2008. Obama made three stops in Texas on Monday speaking in Beaumont, Galveston and Houston. (AP Photo/ The Galveston County Daily News, Kevin M.Cox) ** MANDATORY CREDIT. NO SALES. MAGS OUT. TV OUT **
Democratic presidential hopeful Sen. Barack Obama, D-Ill., walks around greeting people during the Livestock Show and Rodeo 2008 in Houston, Texas, Tuesday, March 4, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., tours the Houston Livestock Show and Rodeo 2008, Tuesday, March 4, 2008, in Houston. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama (D-IL) greets supporters at a rally Monday, March 3, 2008 in Houston. (AP Photo/Pat Sullivan)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters following his address to a town hall for Dallas area students and families Monday, March 3, 2008, in Carrollton, Texas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., speaks at a outdoor rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., waves to supporters following his outdoor rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters during an outdoor rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following his address at a rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters during a outdoor rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters during a rally Saturday, March. 1, 2008, in Providence, R.I.. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets people during a campaign stop at Sombrero Festival following a prayer meeting with Hispanic Evangelical ministers Friday, Feb. 29, 2008, in Brownsville, Texas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., eats a tortilla during a campaign stop at Sombrero Festival following a prayer meeting with Hispanic Evangelical ministers Friday, Feb. 29, 2008, in Brownsville, Texas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters following his remarks at a town hall meeting to discuss strengthening America's economy Thursday, Feb. 29, 2008, in Austin, Texas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., center, meets the people after after speaking about strengthening America's economy at a town hall meeting Thursday, Feb. 28, 2008, in Austin, Texas. (AP Photo/Harry Cabluck)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., shakes hands outside the Julie Rogers Theatre Thursday, Feb 28, 2008 in Beaumont,Texas. He gave a brief speech as well before going inside to address people who had been lined up since early this morning. (AP Photo/The Beaumont Enterprise, Dave Ryan)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., waves after shaking hands and signing a few autographs outside the Julie Rogers Theatre Thursday, Feb 28, 2008 in Beaumont,Texas. He gave a brief speech as well before going inside to address people who had been lined up since early this morning. (AP Photo/The Beaumont Enterprise, Dave Ryan)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., shakes hands and signs a few autographs outside the Julie Rogers Theatre Thursday, Feb 28, 2008 in Beaumont,Texas. He gave a brief speech as well before going inside to address people who had been lined up since early this morning. (AP Photo/The Beaumont Enterprise, Dave Ryan)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following his address at a rally Thursday, Feb. 28, 2008, in Ft. Worth, Texas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters before speaking at a town hall meeting Wednesday, Feb. 27, 2008, in Duncanville, Texas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., left, greets supporters Wednesday, Feb. 27, 2008, in Columbus, Ohio. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters as he arrives for a campaign rally Wednesday, Feb. 27, 2008, in Columbus, Ohio. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns at the University of Cincinnati Monday, Feb. 25, 2008, in Cincinnati, Ohio. At right, a member of Obama's security detail. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., third from right, works the rope line during a rally Monday, Feb. 25, 2008, in Cincinnati, Ohio. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters following his speech at a campaign rally at the University of Cincinnati Monday, Feb. 25, 2008, in Cincinnati, Ohio. (AP Photo/Rick Bowmer)
[11 agents seen here.] Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following his address at the University of Toledo Sunday, Feb. 24, 2008, in Toledo, Ohio. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., speaks during a rally Saturday, Feb. 23, 2008, in Cleveland, Ohio. (AP Photo/Rick Bowmer)
Presidential hopeful Sen. Barack Obama, D-Ill., greets people at the Democratic Debate Watch party after his debate with Sen. Senator Hillary Clinton, D-NY, Thursday night Feb. 21, 2008 in Austin, Texas. (AP Photo/Laura Skelding/Austin American Statesman) ** NO MAGS, NO SALES, NO TV. INTERNET: AP NEWSPAPER MEMBER ONLY**	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., shakes hands after the Democratic presidential debate in Austin, Texas, Thursday, Feb. 21, 2008. (AP Photo/LM Otero)
With a member of his security detail in the foreground, Democratic presidential hopeful, Sen. Barack Obama, D-Ill., addresses a rally, Wednesday, Feb. 20, 2008, in Dallas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters during a rally, Wednesday, Feb. 20, 2008, in Dallas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greet supporters prior to addressing at a rally, Wednesday, Feb. 20, 2008, in Dallas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., makes remarks during a rally, Wednesday, Feb. 20, 2008, in Dallas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters prior to addressing a rally, Wednesday, Feb. 20, 2008, in Dallas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., receives a hug from a supporter during a rally Tuesday, Feb. 19, 2008, in Houston, Texas. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters after address at a rally Tuesday, Feb. 19, 2008, in Houston. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., works the crowd at a rally Tuesday, Feb. 19, 2008 in Houston. (AP Photo/Pat Sullivan)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greet supporters during a rally Tuesday, Feb. 19, 2008, in San Antonio, Texas. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., waves to supporters during a rally at the Guadalupe Cultural Arts Center Tuesday, Feb. 19, 2008, in San Antonio, Texas. (AP Photo/Rick Bowmer)
Presidential hopeful Sen. Barack Obama, D-Ill., greets supporters following his address at a rally Monday, Feb. 18, 2008, in Beloit, Wis. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters during a rally at Guadalupe Cultural Arts Center Tuesday, Feb. 19, 2008, in San Antonio, Texas. (AP Photo/Rick Bowmer)
An agent looks on as Democratic presidential hopeful Sen. Barack Obama, D-Ill., prepares to walk behind stage after shaking hands with supporters following his address at the Wisconsin Democratic Party Dinner Saturday, Feb. 16, 2008, in Milwaukee, Wis. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters after his address at the Wisconsin Democratic Party Dinner Saturday, Feb. 16, 2008, in Milwaukee, Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., makes remarks at the Wisconsin Democratic Party Dinner Saturday, Feb. 16, 2008, in Milwaukee, Wis. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters during a rally Saturday, Feb. 16, 2008, at the University of Wisconsin-Eau Claire, in Eau Claire, Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., shakes hands after speaking at a campaign rally Friday, Feb. 15, 2008, at the Kress Events Center in Green Bay, Wis. (AP Photo/Mike Roemer)	Michelle Obama, wife of presidential hopeful Sen. Barack Obama, D-Ill., talks with supporters during a rally at Cincinnati Music Hall in Cincinnati, Friday Feb. 15, 2008. (AP Photo/The Cincinnati Enquirer, Cara Owsley) [Michelle is now receiving Secret Service Protection.]
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following a rally in Oshkosh, Wis., Friday, Feb. 15, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., shakes hands with supporters following a rally Friday, Feb. 15, in Milwaukee, Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters at a campaign rally Friday, Feb. 15, 2008, in Milwaukee. (AP Photo/Darren Hauck)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., speaks at a rally Friday, Feb. 15, 2008, in Milwaukee, Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters after making remarks during a rally in the Racine Town Hall Wednesday, Feb. 13, in Racine, Wis. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., makes remarks during a rally in Racine Town Hall Wednesday, Feb. 13, in Racine , Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following his address at a town hall meeting in Waukesha, Wis., Wednesday, Feb. 13, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., makes remarks during a town hall meeting in Waukesha, Wis., Wednesday, Feb. 13, 2008. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill. center, signs an autograph after making a speech at a General Motors assembly plant in Janesville, Wis., Wednesday, Feb. 13, 2008. (AP Photo/Andy Manis)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., center, a tours the UAW Plant in Janesville, Wis., Wednesday, Feb. 13, 2008. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., shakes hands during a get out the vote visit to the Eastern Market Metro Station Tuesday, Feb. 12, 2008, in Washington on primary day for the nation's capital, and surrounding Maryland and Virginia. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters during a rally Tuesday, Feb. 12, 2008, in Madison Wis. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets commuters during a get out the vote at the Eastern Market Metro Station in Washington, Tuesday, Feb. 12, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., left, accompanied by Washington Mayor Adrian Fenty, and others, greets commuters during a get out the vote at the Eastern Market Metro Station in Washington, Tuesday, Feb. 12, 2008. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., center, accompanied by Washington Mayor Adrian Fenty, and others, greets commuters during a get out the vote at the Eastern Market Metro Station in Washington, Tuesday, Feb. 12, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., walks to greets commuters during a get out the vote at the Eastern Market Metro Station in Washington, Tuesday, Feb. 12, 2008. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets commuters during a get out the vote at the Eastern Market Metro Station in Washington, Tuesday, Feb. 12, 2008. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., speaks at a rally Monday, Feb. 11, 2008, in Baltimore, Md. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters at a campaign rally Monday, Feb. 11, 2008, in Baltimore. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters after speaking at a campaign rally at the University of Maryland Monday, Feb. 11, 2008, in College Park, Md. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters following a Stand For Change rally Sunday, Feb. 10, 2008, in Virginia Beach, Va. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supporters during a rally at T.C. Williams High School Sunday, Feb. 10, 2008, in Alexandria, Va. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters at a rally at T.C. Williams High School Sunday, Feb. 10, 2008, in Alexandria, Va. (AP Photo/Rick Bowmer)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns at T.C. Williams High School Sunday, Feb. 10, 2008, in Alexandria, Va. (AP Photo/Rick Bowmer)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., second from left, and Virginia Gov. Timothy M. Kaine arrive at Dulles International Airport Sunday, Feb. 10, 2008, in Chantilly, Va., for a campaign event Alexandria. (AP Photo/Rick Bowmer)	Supporters reach out to Democratic presidential hopeful, Sen. Barack Obama, D-Ill., after a rally Friday, Feb. 8, 2008, in Seattle. (AP Photo/Elaine Thompson)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., walks through a hallway before speaking at a rally Thursday, Feb. 7, 2008, in Omaha, Neb. (AP Photo/Rick Bowmer)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., addresses supporters during a rally Thursday, Feb. 7, 2008, in Omaha, Neb. (AP Photo/Rick Bowmer)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., visits with an overflow crowd outside a rally in Santa Fe, N.M.,Friday, Feb. 1, 2008.(AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill, right, greets supporters as he arrives at a Town Hall Meeting at Los Angeles Trade Technical College in Los Angeles, Thursday, Jan. 31, 2008. (AP Photo/Damian Dovarganes)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., center, arrives for a town hall meeting on the campus Los Angeles Trade and Technical College, Thursday, Jan. 31, 2008, in Los Angeles.(AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., works the crowd as he arrives for a rally in Phoenix, Ariz., Wednesday, Jan. 30, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful Barack Obama, D-Ill., greets supporters during a campaign stop Wednesday Jan. 30, 2008 in Denver. (AP Photo/Laramie Boomerang, Andy Carpenean)	Democratic presidential hopeful Barack Obama, D-Ill. shakes hands with supporters after speaking at a rally held at the Magness Arena in Denver on Wednesday, January 30, 2008. (AP Photo/The Daily Camera, Marty Caivano) **THE LONGMONT DAILY TIMES CALL OUT **soft out in instructions only**** photo by Marty Caivano/Jan. 30, 2008
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters at a rally in Denver, Colo., on Wednesday, Jan. 30, 2008. (AP Photo/Ed Andrieski)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns during a rally in Kansas City, Mo., Tuesday, Jan. 29, 2008.(AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., speaks during church services at the Harvest Cathedral Chapel in Macon, Ga., Sunday, Jan. 27, 2008. (AP Photo/Charles Rex Arbogast)	A Secret Service agent is silhouetted as Democratic presidential hopeful Sen. Barack Obama, D-Ill., addresses a crowd of over 9,000 during a rally in Birmingham, Ala., Sunday, Jan. 27, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., right, worships at the Harvest Cathedral Chapel with Pastor Steve Sawyer, left, and his wife Debbie, center, in Macon, Ga., Sunday, Jan. 27, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets people in the crowd after a rally in Columbia, S.C. Saturday, Jan. 26, 2008. (AP Photo/Steven Senne)
Democratic presidential hopeful Sen.Barack Obama, D-Ill. greets supporters at his victory rally Saturday, Jan. 26, 2008 in Columbia, S.C.. (AP Photo/The Post and Courier, Alan Hawes) **NO SALES MAGS OUT**	Democratic presidential hopeful,Sen. Barack Obama, D-Ill., shakes hands after his South Carolina primary victory over Sen. Hillary Clinton, D-N.Y., and former
Democratic presidential hopeful Sen. Barack Obama, D-Ill., smiles at a supporter as he campaigns in Harper's Restaurant in Columbia, S.C., Saturday, Jan. 26, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns in Harper's Restaurant in Columbia, S.C., Saturday, Jan. 26, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns during a rally on the campus of Clemson University in Clemson, S.C., Friday, Jan. 25, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., campaigns during a rally on the campus of Clemson University in Clemson, S.C., Friday, Jan. 25, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., campaigns during a rally in North Charleston, S.C., Thursday, Jan. 24, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., campaigns during a rally in North Charleston, S.C., Thursday, Jan. 24, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., campaigns during a rally in North Charleston, S.C., Thursday, Jan. 24, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., campaigns in Kingstree, S.C., Thursday, Jan. 24, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets people in the audience at the conclusion of a campaign event, in Sumter, S.C. Wednesday, Jan. 23, 2008. (AP Photo/Steven Senne)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., arrives on a foggy day for a town hall meeting on the campus of Winthrop University in Rock Hill, S.C., Wednesday, Jan. 23, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., guarded by two Secret Service agents, right, works the rope line after speaking at a town hall meeting on the campus of Winthrop University in Rock Hill, S.C., Wednesday, Jan. 23, 2008. (AP Photo/Charles Rex Arbogast)	A Secret Service agent, left, watches the crowd as Democratic presidential hopeful, Sen. Barack Obama, D-Ill., participates in a march on the South Carolina Capitol in honor of Martin Luther King, Monday, Jan. 21, 2008, in Columbia, S.C. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., front, center, participates in a march on the South Carolina Capitol in honor of Martin Luther King, Monday, Jan. 21, 2008, in Columbia. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., right, participates in a march on the South Carolina Capitol in honor of Martin Luther King, Monday, Jan. 21, 2008, in Columbia, S.C. (AP Photo/Charles Rex Arbogast)
Two culinary workers take a look as Democratic presidential hopeful Sen. Barack Obama, D-Ill., visits employees at the Mirage Casino Hotel before the start of the Nevada caucus in Las Vegas, Saturday, Jan. 19, 2008, as a Secret Service agent watches. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets supports during a rally at UNLV in Las Vegas, Friday, Jan. 18, 2008. (AP Photo/Jae C. Hong)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., shakes hands at a town hall meeting in Las Vegas Thursday, Jan. 17, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., works the crowd after a town hall meeting on the campus of the University of Nevada-Reno in Reno, Nev., Friday, Jan. 18, 2008. (AP Photo/Charles Rex Arbogast) [Woman at left is Secret Service. See at Obama's right below.]
Democratic presidential candidate, Sen. Barack Obama, D-Ill., leaves a California resident's home after holding a roundtable discussion on the economy Wednesday, Jan. 16, 2008, in the Van Nuys section of Los Angeles. (AP Photo/Ric Francis)	Democratic Presidential hopeful, Sen. Barack Obama, D-Ill., is greeted on a street corner after finishing a campaign visit to the San Francisco Women's Building in San Francisco, Calif., Thursday, Jan. 17, 2008. Sen. Obama took part in the event which was a roundtable discussion about the economy and women's issues. (AP Photo/Eric Risberg)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., works the crowd at a town hall meeting in Henderson, Nev., Wednesday, Jan. 16, 2008. (AP Photo/Charles Rex Arbogast)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., works the crowd at a town hall meeting in Henderson, Nev,, Wednesday, Jan. 16, 2008. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets New Hampshire voters as he leaves a campaign rally at Stevens High School in Claremont, NH., Monday morning, Jan. 7, 2008. After Obama's big win in the Iowa caucuses last week he is campaigning for New Hampshire's first in the nation presidential primary on Tuesday Jan. 8, 2008. (AP Photo/Stephan Savoia)	Democratic Presidential hopeful, Sen. Barack Obama D-Ill., waves to residents after visiting a coffee shop in New London, N.H., Monday, Jan. 7, 2007. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., walks a rope line greeting New Hampshire voter after a campaign rally at Stevens High School in Claremont, NH., Monday morning, Jan. 7, 2008. After Obama's big win in the Iowa caucuses last week he is campaigning for New Hampshire's first in the nation presidential primary on Tuesday Jan. 8, 2008. (AP Photo/Stephan Savoia)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., reaches into a crowd of supporters after an address at the Opera House in Lebanon, N.H., Monday, Jan. 7, 2008. (AP Photo/Charles Krupa)
Democratic presidential hopeful, Sen. Barack Obama D-Ill., works an overflow crowd at a rally, Monday, Jan. 7, 2008, in Lebanon, N.H. (AP Photo/M. Spencer Green)	Democratic presidential hopeful and Sen. Barack Obama D-Ill., speaks to an overflow crowd at a rally, Monday, Jan. 7, 2008, in Lebanon, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., shakes hands with New Hampshire voters on his way out of a campaign event at Exeter High School in Exeter, NH., Sunday, Jan. 6, 2008. After Obama's big win in the Iowa caucuses last week he is campaigning for New Hampshire's first in the nation presidential primary on Tuesday Jan. 8, 2008. (AP Photo/Stephan Savoia)	A female secret service agent introduces herself to Chicago Police outside the home of Democratic Sen. Barack Obama, Thursday, May 3, 2007, in Chicago's Hyde Park neighborhood. The Secret Service said Thursday that Obama was being placed under its protection, the earliest ever for a presidential candidate. (AP Photo/Charles Rex Arbogast)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., talks with New Hampshire voters as he walks a rope line after a campaign event at Exeter High School in Exeter, NH., Sunday, Jan. 6, 2008. After Obama's big win in the Iowa caucuses last week he is campaigning for New Hampshire's first in the nation presidential primary on Tuesday, Jan. 8, 2008. (AP Photo/Stephan Savoia)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., talks with New Hampshire voters along a rope line as he leaves a campaign event at Exeter High School in Exeter, NH., Sunday, Jan. 6, 2008. After Obama's big win in the Iowa caucuses last week he is campaigning for New Hampshire's first in the nation presidential primary on Tuesday Jan. 8, 2008. (AP Photo/Stephan Savoia)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., discusses a campaign issue with a New Hampshire voter as he walks a rope line greeting voters after a campaign event at Exeter High School in Exeter, NH., Sunday, Jan. 6, 2008. (AP Photo/Stephan Savoia)	Democratic presidential hopeful, Sen. Barack Obama D-Ill., right, speaks with his chief strategist, David Axelrod, as they leave a rally Sunday, Jan. 6, 2008 in Exeter, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful, Sen. Barack Obama D-Ill., signs autographs after speaking at a campaign rally Thursday, Dec. 27, 2007 in Des Moines, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., talks with caucus goers a campaign stop Tuesday, Jan. 1, 2008, in Sioux City, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful, U.S. Sen Barack Obama, D-Ill., leaves after a round table discussion campaign stop in Exeter, N.H., Thursday, Dec. 20, 2007.(AP Photo/Jim Cole)	A member of the U.S. Secret Service Counter-Snipers squad makes his way to the roof of RFK Stadium to get into position for opening day ceremonies for tonight's game between the Washington Nationals and the visiting Arizona Diamondbacks at RFK Stadium Thursday, April 14, 2005 in Washington. President Bush is throwing out the first pitch at the first regular-season baseball game in the nation's capital in 34 years. (AP Photo/Pablo Martinez Monsivais)
Jim Bourg/Reuters via the New York Times A brief tussle ensued between Bill O’Reilly, the Fox News host, and Marvin Nicholson, a campaign aide for Mr. Obama. Photographs of the incident show that Secret Service agents intervened after Mr. O’Reilly pushed Mr. Nicholson.
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands after a rally, Saturday Jan. 5, 2008, in Nashua, N.H. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., talks to supporters at a rally Friday, Jan. 4, 2008, in Concord, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands at a rally surrounded by Secret Service agents Friday, Jan. 4, 2008, in Concord, N.H. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., talks to patrons at a coffee shop Friday, Jan. 4, 2008, in Dover, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., talks to patrons at a coffee shop Friday, Jan. 4, 2008, in Dover, N.H. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., walks through the snow after a stop at a coffee shop Friday, Jan. 4, 2008, in Dover, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., and his wife Michelle Obama greet diners at a food court on caucus day, Thursday, Jan. 3, 2008, in Des Moines, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., greets patrons at a coffee shop Friday, Jan. 4, 2008, in Dover, N.H. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands on caucus day Thursday, Jan. 3, 2008, at a food court in Des Moines, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen. Barack Obama D-Ill., greets diners on caucus day Thursday, Jan. 3, 2008, at a food court in Des Moines, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful, Sen. Barack Obama D-Ill., greets diners on caucus day Thursday, Jan. 3, 2008, at a food court in Des Moines, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets diners at a food court on caucus day Thursday, Jan. 3, 2008 in Des Moines,, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., hugs his wife Michelle Obama before speaking at a campaign stop Tuesday, Jan. 1, 2008 in Dubuque, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., arrives Wednesday, Jan. 2, 2008, to speak in Davenport, Iowa. Democratic and Republican candidates are going all out Wednesday to encourage supporters to vote for them in the close Iowa caucus Thursday. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands after speaking Wednesday, Jan. 2, 2008, in Davenport, Iowa. Both Democratic and Republican candidates are going all out Wednesday to encourage supporters to vote for them in the close caucus in Iowa Thursday. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen. Barack Obama D-Ill., shakes hands at a campaign rally Thursday, Dec. 27, 2007, in Des Moines, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands as he enters a campaign stop Tuesday, Jan. 1, 2008, in Council Bluffs, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama D-Ill., speaks at a campaign stop Tuesday, Jan. 1, 2008 in Dubuque, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama D-Ill., shakes hands as he enters a campaign stop Tuesday, Jan. 1, 2008, in Council Bluffs, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful Sen. Barack Obama, D-Ill., shakes hands at a rally at Roosevelt High School Tuesday Jan. 1, 2008, in Des Moines, Iowa.(AP Photo/M. Spencer Green)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., greets Olivia Taylor, 3, during a rally in Perry, Iowa, Monday, Dec. 31, 2007. (AP Photo/Chris Carlson)	Democratic presidential hopeful, Sen. Barack Obama D-Ill., greets supporters at a campaign stop Sunday, Dec. 30, 2007 in Newton, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful, Sen. Barack Obama D-Ill., greets supporters at a campaign stop Sunday, Dec. 30, 2007 in Newton, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen. Barack Obama D-Ill., responds to a question from Karen Jaminet, left, at a campaign stop Sunday, Dec. 30, 2007 in Newton, Iowa. (AP Photo/M. Spencer Green)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., greets supporters after speaking at a campaign stop at a rally at Mount Pleasant Community High School in Mount Pleasant, Iowa, Saturday, Dec. 29, 2007. (AP Photo/Jeff Chiu)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., center, greets supporters after speaking at a campaign stop at a rally at Mount Pleasant Community High School in Mount Pleasant, Iowa, Saturday, Dec. 29, 2007. (AP Photo/Jeff Chiu)
Democratic presidential hopeful, Sen. Barack Obama D-Ill., shakes hands before he speaks at a campaign stop Friday, Dec. 28, 2007 in Coralville, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen Barack Obama, D-Ill., reaches out to shake hands during a campaign stop in Portsmouth, N.H., Thursday, Dec. 20, 2007.(AP Photo/Jim Cole)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., talks to the media after a campaign stop Saturday, Dec. 15, 2007, in Independence, Iowa. (AP Photo/M. Spencer Green)	Democratic presidential hopeful, Sen Barack Obama, D-Ill., shakes hands during a campaign stop in Portsmouth, N.H., Thursday, Dec. 20, 2007. (AP Photo/Jim Cole)
Democratic presidential hopeful Sen. Barack Obama D-Ill., listens to a question from a potential supporters after speaking at the Monticello Berndes Center in Monticello, Iowa, Friday, Dec. 14, 2007. (AP Photo/David Lienemann)	Presidential hopeful Sen. Barack Obama, D-Ill., right, is following by security agents as he leaves the auditorium following a campaign visit to a Seattle nightclub, Tuesday, Dec. 11, 2007. Obama chose a nightclub, Showbox SoDo, as his fundraising venue in one of the West's most heavily Democratic cities. (AP Photo/Elaine Thompson)
Democratic presidential hopeful Sen. Barack Obama, D-Ill., leaves after a roundtable discussion with local residents at the Clark County Public Library in Las Vegas on Monday, Dec. 10, 2007. (AP Photo/Jae C. Hong)	Democratic presidential hopeful, Barack Obama, second from left, is hugged by a pedestrian while the Rev. Al Sharpton, right, looks on before an Obama fundraiser in the Harlem section of New York, Thursday, Nov. 29, 2007. (AP Photo/Seth Wenig)
Democratic Presidential hopeful, Sen. Barack, D-Ill., center, is embraced by a supporter as he leaves the stage after speaking at the Democratic National Committee Fall Meeting in Vienna, Va., Friday, Nov. 30, 2007. (AP Photo/Charles Dharapak)	Democratic presidential hopeful, Sen. Barack Obama, D-Ill., center, greets voters after a rally at Iowa State University in Ames, Iowa, on Sunday, Dec. 2, 2007. (AP Photo/Kevin Sanders)
Democratic presidential hopeful U.S. Sen. Barack Obama talks with the crowd as he is surrounded by secret service during a campaign rally at McAlister Square Friday, June 15, 2007, in Greenville, S.C. Some 3,500 people turned out to listen to Sen. Obama in an area considered to be one of the most Republican areas of one of the country's most Republican states. (AP Photo/Mary Ann Chastain)	Democratic presidential hopeful, U.S. Sen Barack Obama, D-Ill., shakes hands as he waits for a camera to turn on during a campaign stop in Portsmouth, N.H., Tuesday, Nov. 27, 2007.(AP Photo/Jim Cole)
A U.S. Secret Service special agent keeps an eye on the crowd as Democratic presidential hopeful Sen. Barack Obama D-Ill., speaks at the National Conference of Black Mayors on the campus of Southern University in Baton Rouge, La., Saturday, May 5, 2007.(AP Photo/Alex Brandon)	Democratic presidential hopeful, U.S. Sen Barack Obama, D-Il., with Secret Service close by, right, shakes hands following a visit to Mack's Apples while campaigning in Londonderry, N.H., Tuesday, Oct. 9, 2007. Obama told voters they should elect him U.S. president, "not because I have some perfect solution" to pressing problems, but because he is the candidate who can get things done. (AP Photo/Jim Cole)