Sen. David Vitter, R-La., admitted in July 2007 that he was a client of the escort service Pamela Martin and Associates run by Deborah Jeane Palfrey, aka the D.C. Madam. Accompanied by his wife, Vitter held a press conference after the disclosure, during which he apologized for what he had previously called "a very serious sin in my past" and disputed additional reports linking him with a New Orleans brothel and a prostitute.
(Alex Brandon/AP Photo)