The Voting Rights Act of 1965 is a valid exercise of Congress's power under Section 2 of the Fifteenth Amendment. Decided March 7, 1966 (argued 1966). Opinion of the Court: Earl Warren → go there Applied: the Fifteenth Amendment → go there Topic: Power of Congress to enforce civil rights. South Carolina v. Katzenbach, 383 U.S. 301 (1966), is a landmark decision of the United States Supreme Court that rejected a challenge from the state of South Carolina to the preclearance provisions of the Voting Rights Act of 1965, which required that some states submit changes in election districts to the attorney general of the United States. The preclearance provisions were ruled constitutional and the Voting Rights Act of 1965 was enforced in full. Wiki link