In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This man was elected to Congress with the slogan ""Congress needs a tail-gunner. "" He gained notice after a speech in Wheeling, West Virginia. He was criticized for his attack on the clerk Annie Lee Moss on the program See It Now by Edward R. Murrow. Along with attorney Roy Cohn, he was discredited during the 1954 Army hearings, in which Joseph Welch asked him ""Have you no sense of decency, sir"" For 10 points, name this Wisconsin Senator who led witch-hunts against supposed Communists in the 1950s.
A:
History