Clarence Thomas is an American lawyer and jurist who has served since 1991 as an associate justice of the Supreme Court of the United States. President George H. W. Bush nominated him to succeed Thurgood Marshall. After Marshall, Thomas is the second African American to serve on the U.S. Supreme Court and has been its longest-serving member since Anthony Kennedy's retirement in 2018. He has also been the Court's oldest member since Stephen Breyer retired in 2022.