U.S. President Bush (28 images)

U.S. President George W. Bush waves as he departs after speaking to the 35th Conservative Political Action Conference in Washington on February 8, 2008. Bush touted his record and called on conservatives to help put another Republican in the White House in the November election. (UPI Photo/Roger L. Wollenberg)

U.S. President George W. Bush departs from the South Lawn of the White House in Washington, en route to Fredericksburg, Virginia, to discuss the economy, on December 17, 2007. With Bush are White House Press Secretary Dana Perino and White House Deputy Chief of Staff for Policy Joel D. Kaplan. (UPI Photo/Roger L. Wollenberg)

U.S. President George W. Bush speaks during a press conference at the White House in Washington on February 28, 2008. Bush spoke on FISA legislation, the ailing economy and Iraq. (UPI Photo/Kevin Dietsch)

Marine One prepares to land on the South Lawn bringing U.S. President George W. Bush back to the White House in Washington on November 24, 2007. Bush spent Thanksgiving weekend at Camp David. (UPI Photo/Alexis C. Glenn)