U.S. President Bush (28 images)

U.S. President George W. Bush walks to Marine 1 as he departs the White House, for a week-end at Camp David, in Washington on October 6, 2007. (UPI Photo/Ron Sachs/POOL)

U.S. President George W. Bush and Republican presumptive presidential nominee Sen. John McCain (R-AZ) depart after speaking to the media in the Rose Garden of the White House on March 5, 2008. Bush endorsed McCain's candidacy and pledged to support McCain during the campaign. (UPI Photo/Roger L. Wollenberg)

U.S. President George W. Bush (L), Palestinian President Mahmoud Abbas (R) and Israeli Prime Minister Ehud Olmert re-enter the Oval Office following Bush's statement to the media in the Rose Garden of the White House after their meeting in the Oval Office on November 28, 2007. The three leaders participated in a peace conference in the U.S. this week aimed at restarting talks between the Israelis and Palestinians. (UPI Photo/Roger L. Wollenberg)

U.S. President George W. Bush and French President Nicolas Sarkozy (L) speak to the media after touring Mount Vernon, President George Washington's home, in Mount Vernon, Virginia, on November 7, 2007. (UPI Photo/Roger L. Wollenberg)