The Alien Registration Act of 1940 (The Smith Act)was Made

The Alien Registration Act of 1940 (the Smith Act) was made virtually useless as a tool for prosecuting communists by a Supreme Court decision that protected those who say they favor communism as an abstract idea unless it can be proven that they are advocating violent action to carry out their beliefs.The decision was:

A) Near v.Minnesota.
B) Whitney v.California.
C) Yates v.U.S. .
D) Dennis v.U.S. .
E) Fiske v.Kansas.