Brien McMahon

Brien McMahon (October 6, 1903 – July 28, 1952) was an American lawyer, politician, and U.S. Senator from Connecticut. Elected to the Senate in 1944, McMahon became a prominent voice in atomic energy policy during the critical early years of the nuclear age. He chaired the Joint Committee on Atomic Energy and was instrumental in shaping the Atomic Energy Act of 1946, which established civilian control over atomic energy in the United States. McMahon was a progressive voice in the Democratic Party and advocated for international control of atomic weapons to prevent nuclear proliferation. His "Atomic Peace Plan" proposed using atomic energy for peaceful purposes and development. Though his Senate career was cut short by his death from cancer at age 48, McMahon's influence on American nuclear policy during the formative post-World War II period was significant and lasting. He represents an important chapter in the early nuclear era and Cold War diplomacy.