South Carolina Gov. Mark Sanford appeared at a news conference June 24, 2009, after a mysterious disappearance to say, "I've been unfaithful to my wife." The governor's staff had said their boss was on the Appalachian Trail once his absence became apparent. He was actually in Argentina, he said, seeing another woman. His admission makes him the latest in a long line of politicians who have admitted to acting unfaithfully while serving in office. (Mary Ann Chastain/AP Photo)