The Internal Security Act of 1950, 64 Stat. 987, also known as the Subversive Activities Control Act of 1950, the McCarran Act after its principal sponsor Sen. Pat McCarran, or the Concentration Camp
Civil libertarians and radical political activists considered the McCarran Act to be a dangerous and unconstitutional infringement of political liberty, as exemplified in this 1961 poster.
A no trespassing sign at Langley Air Force Base, citing section 21 of Internal Security Act of 1950/50 U.S.C. § 797.
The National Committee to Defeat the Mundt Bill AKA "NCDMB" was an American organization that sought to oppose passage of the Mundt-Nixon Bill and subject of a 15-page report of the House Un-American
Former US Representative Jerry J. O'Connell (here, 1951) headed NCDMB
U.S. Representative Karl E. Mundt (1940) supported the Mundt Bill while serving on the House Un-American Activities Committee
U.S. Representative Richard M. Nixon (1950) supported the Mundt Bill while serving on HUAC
US Representative Leo Isacson (here, 1947) was an NCDMB member