Carl Levin was an American politician who served as a United States Senator from Michigan from 1979 to 2015. He was a member of the Democratic Party and was known for his work on issues such as national defense, economic policy, and environmental protection. Levin was the longest-serving senator in Michigan's history. During his time in the Senate, Levin chaired the Senate Armed Services Committee and played a significant role in shaping military policy. He was also involved in various investigations, including those related to the 2008 financial crisis. Levin's commitment to public service and bipartisanship earned him respect across party lines.