Dingell's investigations helped lead to the criminal conviction of one of President Ronald Reagan's top advisers, Michael Deaver, for lying under oath, and to the resignation of Reagan's first environmental protection chief and U.S. Supreme Court Justice Neil Gorsuch's mother, Anne Gorsuch Burford. He began his career during former President Dwight D. Eisenhower's administration and retired in 2014 during former President Barack Obama's administration. She said in a statement that Dingell died peacefully at his home in Dearborn, Mich.
"He was my love", Debbie Dingell said by phone late Thursday, sobbing. They hold power - in trust for the people who elected them. Both events will be open to the public. In 2014, Dingell told Politico Magazine, "If you look, you'll find that what I did was make these laws tolerant for industry".
From 1981 until 2009, Dingell was the top-ranking Democrat on the House Energy and Commerce Committee.
John Dingell responded: 'Buddy, I think you might want to sit this one out'. At Georgetown University, he earned a bachelor's degree in chemistry in 1949 and a law degree three years later. He was 92 years old. Unable to sway a handful of Democrats who opposed mandating universal coverage - and unwilling to compromise on that point - Dingell notified the House speaker, Thomas Foley, that he couldn't muster the votes to produce legislation.
Alongside his congressman father, Dingell was serving as a page on the House floor when President Franklin D. Roosevelt asked Congress to declare war on Japan on December 8, 1941.
Dingell has been in and out of the hospital multiple times since retiring from Congress.
In a joint statement, Bill and Hillary Clinton said that they "are grateful to have had the chance to work with him, to celebrate his becoming the longest-serving member of Congress in history, and most of all, to call him our friend".
The former congressman was first elected to the House in 1955, a seat formerly held by his father, John Dingell, Sr.
Dingell dictated the message to his wife and congressional successor Debbie Dingell Thursday in their suburban Detroit home.
Obama awarded Dingell the Presidential Medal of Freedom later that year.
John had a heart attack in September, according to ABC News, and was suffering from complications of prostate cancer, the Washington Post reported. He was hospitalized, but was soon "cracking jokes as usual", his wife said at the time. The president also used Twitter to extend sympathies to Debbie Dingell and other family members.