Mundt, MUNT, Karl Earl (1900-1974), a South Dakota Republican, was a United States senator from 1949 to 1973. He also served five terms in the U.S. House of Representatives from 1939 to 1949. Mundt and Richard M. Nixon wrote the Mundt-Nixon Anti-Communist Bill of 1948 requiring Communist Party members to register with the U.S. Department of Justice. The bill did not become law, but its provisions were included in the Internal Security Act of 1950. Mundt introduced legislation to provide money for Voice of America radio broadcasts after World War II (1939-1945). He also introduced legislation authorizing educational exchange programs between the United States and other countries. Mundt suffered a stroke in 1969 and was unable to resume his Senate duties. He did not run for reelection in 1972.