** FILE ** In this Sept. 14, 1973 black-and-white file photo John McCain is greeted by President Richard Nixon, left, in Washington, after McCain spent more than five years in a Vietnamese prisoner of war camp, know as the "Hanoi Hilton" before his release in March 1973. The "tough resister" of the Hanoi Hilton became an American hero, soon on the fast track to a seat in the Senate. (AP Photo/File)