** FILE ** Secretary of State Hillary Rodham Clinton (left) and Secretary of Defense Robert M. Gates listen to a question during a news conference at the State Department in Washington in 2009. (AP Photo)
** FILE ** Secretary of State Hillary Rodham Clinton (left) looks on as Afghan President Hamid Karzai (second from right) greets Richard C. Holbrooke, the U.S. special representative for Afghanistan and Pakistan, at the Presidential Palace in Kabul, Afghanistan, on Wednesday, Nov. 18, 2009. (AP Photo/U.S. Embassy)
** FILE ** Secretary of State Hillary Rodham Clinton chats with Vice President Joseph R. Biden Jr. in the White House on Aug. 18, 2009. White House spokesman Robert Gibbs on Wednesday, Oct. 6, 2010, denied that President Obama was considering Mrs. Clinton as running mate in 2012 instead of Mr. Biden.
** FILE ** U.S. Secretary of State Hillary Rodham Clinton meets with Bahraini King Hamad bin Isa al-Khalifa on the sidelines of the Egypt-hosted international conference on rebuilding Gaza, in Sharm el-Sheik, Egypt, in March 2009. (AP Photo/U.S. Embassy in Egypt, Sameh Refaat)
** FILE ** In this April 8, 2008, file photo Sen. Hillary Rodham Clinton, D-N.Y., a member of the Senate Armed Services Committee, listens to testimony on Capitol Hill in Washington from Gen. David Petraeus. From the disappointment of a failed White House bid, Clinton is on the threshold of the world's stage as chief diplomat for the Democrat who defeated her.
** FILE ** Seen here two days before the 1992 presidential election, Bill Clinton and Hillary Rodham Clinton dance on stage at a rally at the Brendan Byrne Arena in East Rutherford, N.J. Fleetwood Mac's "Don't Stop" was that year's campaign theme song. (Associated Press)
Sen. Hillary Rodham Clinton shared a laugh yesterday with Hazel Dukes, president of the New York chapter of the National Association for the Advancement of Colored People in Manhattan at an event honoring the legacy of Martin Luther King. (Agence France-Presse/Getty Images)
Associated Press photographs
Democratic presidential hopeful Barack Obama is positioned to give fellow senator Hillary Rodham Clinton a run for the campaign money in his bid for the presidency in 2008.