existent barriers against Communist subversion." The decision's impact was limited in that the Court limited the application of the principles it espoused in Watkins. See also List of United States Supreme Court cases List of United States Supreme Court cases by the Warren Court List of United States Supreme Court cases, volume 354 List of United States Supreme Court cases involving the First Amendment References External links United States Supreme Court cases United States Supreme Court cases of the Warren Court United States freedom of association case law 1957 in United States case law American Civil Liberties Union litigation Communist Party USA litigation McCarthyism History of the United Auto Workers