Comment Re:I blame J. Edgar Hoover (Score 2) 328
J. Edgar Hoover actually took a pretty dim view toward polygraphs. When the FBI relied on them for the first time in a counterintelligence investigation, polygraph results led them to relax surveillance of a Nazi spy suspect, who promised to cooperate with the FBI. But after finishing his polygraph, he got on the next ship to Germany and was gone. See Chapter 15 of Nazi Spies in America, a book by the FBI special agent who was in charge of the bungled case.