Answer
Byrnes served as an Associate Justice of the Supreme Court of the United States from 1941 to 1942. Appointed by President Franklin D. Roosevelt, Byrnes filled the vacancy left by the resignation of James Clark McReynolds. During his brief tenure on the Court, Byrnes participated in several significant cases, including Wickard v. Filburn, in which the Court upheld the government's regulation of agricultural production under the Agricultural Adjustment Act.