b) Condoleeza Rice
Jimmy now tries to shift the blame for his self-initiated negotiations with terrorists by saying the State Department didn't actually tell him NOT to. Condi, just as politely, points out that the former President is full of it -- he was told (and we all remember the news stories before his trip reporting that he was, in fact, told).
Digging himself ever deeper, Ol' "I'll never lie to you" (a.k.a. the Worst President of the Twentieth Century) says that, No, it's Rice who keeps saying what she knows is untrue.
The fact that we let Jimmy Carter walk around and embarrass us is proof of the essential freedom of American society.