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John Dingell was an American politician who served in the United States House of Representatives from 1955 until his death in 2019. He was the longest-serving member of Congress in American history. Dingell served under 11 presidents: Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, Richard M. Nixon, Gerald R. Ford, Jimmy Carter, Ronald Reagan, George H. W. Bush, Bill Clinton, George W. Bush, and Barack Obama.