President Harry S. Truman's Executive Order 9835 of March 21, 1947, required that all federal civil-service employees be screened for "loyalty". The order said that one basis for determining disloyalty would be a findin… See more

McCarthy's involvement in these issues began publicly with a speech he made on Lincoln Day, February 9, 1950, to the Republican Women's Club of Wheeling, West Virginia. He brandished a piece of paper, whic… See more

A number of anti-communist committees, panels, and "loyalty review boards" in federal, state, and local governments, as well as many private agencies, carried out investigations for small and large companies … See more

McCarthyism was supported by a variety of groups, including the American Legion and various other anti-communist organizations. One core element of support was a variety of militantly anti-communist women's groups suc… See more

Those who sought to justify McCarthyism did so largely through their characterization of communism, and American communists in particular. Proponents of McCarthyism claimed that the CPUSA was so completely under Mos… See more