The Gang that cooperated with the agency created in 1938 to investigate alleged disloyalty was a leading member of what committee?
Martin Gang:  In the 1950s, Gang was known for providing legal representation to movie industry workers who cooperated with the House Un-American Activities Committee and was a leading member of the American Jewish Committee. House Un-American Activities Committee:  The HUAC was created in 1938 to investigate alleged disloyalty and subversive activities on the part of private citizens, public employees, and those organizations suspected of having communist ties.
American Jewish Committee