An idiot and a liar. Remember when he claimed he flew “combat missions” from Guantanamo? A couple of freepers actually defended him with some technicality. (Probably because they were using the same lie)
Actually, Harkin claimed to have flown combat missions over Vietnam (declaring that he would have “refused orders to bomb civilians”), when the only flying he actually did was to ferry damaged but flyable aircraft to Japan, without ever flying through Vietnamese airspace.
Harkin was challenged over this lie in 1992, and his ambition to be prez was toast soon afterward.