Along with reviewing New York Times Co v. Sullivan, and Smith Mundt, this needs to be priority. WTH's up (or down) with this, anyway?

The Communist Control Act (68 Stat. 775, 50 U.S.C. 841-844) is a piece of United States federal legislation, signed into law by President Dwight Eisenhower on 24 August 1954, which outlaws the Communist Party of the United States and criminalizes membership in, or support for the Party or "Communist-action" organizations and defines evidence to be considered by a jury in determining participation in the activities, planning, actions, objectives, or purposes of such organizations

Eisenhower: August 24, 1954 “I HAVE just signed a bill which is designed to place into the hands of our law enforcement agencies, particularly the Attorney General and the FBI, better weapons for combatting the Communist menace in this country. This is one of a series of bills that are designed in this general purpose.

The American people are determined to eliminate from their midst organizations which, —purporting to be political parties in the accepted sense of that term, are actually conspirators dedicated to the destruction of our form of government by violence and force.”—

… https://www.presidency.ucsb.edu/documents/remarks-the-communist-control-act-1954