A key Republican leader demanded Sunday that House Speaker Nancy Pelosi produce evidence to back up her assertion that she was misled by the CIA on the use of so-called "enhanced interrogation techniques." Last week, Pelosi reiterated an earlier claim that she was briefed by the CIA on such techniques only once — in September 2002 — and that she was told at the time that the techniques were not being used. A recently released Justice Department memo, however, says the CIA used waterboarding at least 83 times in August 2002 in the interrogation of Abu Zubaydah, a suspected al Qaeda leader imprisoned at U.S. facilities in Guantanamo Bay, Cuba