Chief Justice Earl WarrenWarren, Earl;Pennsylvania v. Nelson[Pennsylvania v. Nelson] wrote the opinion for the 6-3 majority, upholding the Pennsylvania supreme court in overturning the conviction of CommunistCommunism Party leader Steve Nelson on a state antisedition law. The Supreme Court decided that federal anticommunist legislation was so pervasive that the federal government had preempted the field. The domestic political reaction was so strong that the Court did not advance further in this direction in the 1950’s. Justice Stanley F. Reed wrote a dissent in which he was joined by Justices Sherman Minton and Harold H. Burton.Assembly and association, freedom of;Pennsylvania v. Nelson[Pennsylvania v. Nelson]Subversion;Pennsylvania v. Nelson[Pennsylvania v. Nelson]

Albertson v. Subversive Activities Control Board

Aptheker v. Secretary of State

Bad tendency test

Clear and present danger test

Cold War

Communist Party v. Subversive Activities Control Board

Dennis v. United States

Scales v. United States

Yates v. United States