The McCarran Internal Security Act

Question

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The McCarran Internal Security Act was passed in 1950 and required communist organizations to register with the government. It also authorized the creation of a list of subversive organizations, as well as allowed for the detention of suspected subversives during a national emergency. However, it did not outlaw all communist organizations or strip American citizenship from known communists. The Truman administration did not strongly support this act, as Truman vetoed an earlier version of the bill before it was revised and passed.