Roger Brooke Taney was an American lawyer and politician who served as the fifth chief justice of the United States from 1836 until his death in 1864. Taney delivered the majority opinion in Dred Scott v. Sandford (1857), ruling that African Americans could not be considered U.S. citizens and that Congress could not prohibit slavery in the U.S. territories. Prior to joining the U.S. Supreme Court, Taney served as the U.S. attorney general and U.S. secretary of the treasury under President Andrew Jackson. He was the first Catholic to serve on the Supreme Court.