Feb 25, 2014 13:38 Dingell, longest-serving congressman, to retire Dingell, longest-serving congressman, to retire Associated Press file photo by J. Scott Applewhite -- U.S. Rep. John Dingell, D-Mich. speaks Oct. 4, 2013, on Capitol Hill in Washington. According to AP source: Dingell, the longest-serving member of Congress, to retire. JEFF KAROUB and KEN THOMAS| Associated Press Feb. 25, 2014 Comments SOUTHGATE, Mich. — Rep. John Dingell, the longest-serving member of Congress in American history and a champion of Detroit’s auto industry, has announced his retirement. The 87-year-old Michigan Democrat made the announcement Monday before a speech to a Detroit-area Chamber of Commerce. Dingell has served in the U.S. House since winning his late father’s seat in 1955. He became the longest-serving member of Congress ever in June when he broke the record held by the late Sen. Robert Byrd of West Virginia. Dingell has played a role in many major pieces of legislation, including President Barack Obama’s health care overhaul and Medicare. As a congressional page, he watched President Franklin Roosevelt ask Congress to declare war on Japan. There is speculation that Dingell’s wife, Debbie Dingell, may run to replace him.