Federal loyalty oath

Executive Order No. 9835 was issued by U.S. President Harry S. Truman nine days after his announcement of the Truman Doctrine. The order set up "loyalty boards" in government agencies to investigate government employees for "disloyalty to the Government of the United States," which included belonging to any group designated by the Attorney General (AG) as subversive. The AG list, which dated back to 1942, included many liberal organizations.