McCarran Act or Internal Security Act of 1950
Explains the controversy surrounding the law that required Communist groups to register with the Attorney General.
www.english.upenn.edu/~afilreis/50s/mccarran-act-intro.html
Internal Security Act
Briefly describes the controversy over the act and includes an excerpt from Harry Truman's veto.
www.spartacus.schoolnet.co.uk/USAinternal.htm