Why did president Truman set up the loyalty review program?

President Truman established the loyalty review program in 1947 to address fears of communist infiltration in the U.S. government during the early Cold War period. The program aimed to investigate the loyalty of federal employees, ensuring that those deemed disloyal or associated with subversive activities were removed from their positions. This initiative reflected a broader effort to bolster national security and public confidence in government institutions during a time of heightened political tension.