John James Conyers Jr. was an American politician of the Democratic Party who served as a U.S. representative from Michigan from 1965 to 2017. Conyers was the sixth-longest serving member of Congress and the longest-serving African American member of Congress in history.

John David Dingell Jr. was an American politician from the state of Michigan who served as a member of the United States House of Representatives from 1955 until 2015. A member of the Democratic Party, Dingell holds the record as the longest-serving member of Congress in American history.