John David Dingell, Jr. (born July 8, 1926) is an American politician who was a member of the United States House of Representatives from December 13, 1955, until January 3, 2015. He was a member of the Democratic Party and represented Michigan throughout his congressional tenure. Most recently, he served as the representative for Michigan's 12th congressional district.

He began his congressional career by succeeding his father, John Dingell, Sr. who had represented Michigan in the House of Representatives for 22 years in 1959. Having served for over 59 years, he has the longest Congressional tenure in U.S. history. Dingell was a long-time member of the House Energy and Commerce Committee and chaired the committee over multiple Congresses.

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