Dred Scott v. Sandford, 60 U.S. 393 (1857), was a ruling by the U.S. Supreme Court that people of African descent imported into the United States and held as slaves (or their descendants, whether or not they were slaves) were not protected by the Constitution and could never be U.S. citizens. The court also held that the U.S. Congress had no authority to prohibit slavery in federal territories and that, because slaves were not citizens, they could not sue in court. Furthermore, the Court ruled that slaves, as chattels or private property, could not be taken away from their owners without due process. The Supreme Court’s decision was written by Chief Justice Roger B. Taney.