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==Political career==

==Political career==

He successfully ran for Congress in 1942 to replace retiring Republican [[Jeannette Rankin]] (who was unpopular after being the only representative to vote against U.S. declaration of war in [[WWII]]), and was assigned to the Foreign Affairs Committee, where he specialized in Asian issues.

He successfully ran for Congress in 1942<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=442081 MT - District 01]. ''Our Campaigns''. Retrieved May 19, 2021.</ref> to replace retiring Republican [[Jeannette Rankin]] (who was unpopular after being the only representative to vote against U.S. declaration of war in [[WWII]]), and was assigned to the Foreign Affairs Committee, where he specialized in Asian issues.

Elected to the Senate in 1953 following ten years in the House, Mansfield gained a reputation for his expertise in foreign policy, particularly in the Far East, and for his informality and low-keyed effectiveness. He voted with the liberals on domestic issues, but formed his own opinions on foreign policy. In 1957 Majority Leader [[Lyndon B. Johnson]] selected Mansfield as Majority Whip, the #2 spot, giving him numerous duties and little power.  Mansfield was elected by the Democrats as Majority Leader in 1961 following Johnson's election as vice president.  

Elected to the Senate in 1953 following ten years in the House, Mansfield gained a reputation for his expertise in foreign policy, particularly in the Far East, and for his informality and low-keyed effectiveness. He voted with the liberals on domestic issues, but formed his own opinions on foreign policy. In 1957 Majority Leader [[Lyndon B. Johnson]] selected Mansfield as Majority Whip, the #2 spot, giving him numerous duties and little power.  Mansfield was elected by the Democrats as Majority Leader in 1961 following Johnson's election as vice president.