The Civil Rights Act and the Voting Rights Act

Before 1965, Southern states kept Black citizens from voting without ever mentioning race. A literacy test could ask an applicant to interpret an obscure clause of the state constitution, graded by a hostile registrar who passed white applicants automatically and failed Black ones regardless of their answer. A poll tax added a cost many could not pay, and the two together stopped most Black Mississippians from ever registering. The Voting Rights Act of 1965 banned literacy tests outright and added preclearance: states and counties with a history of discrimination had to get federal approval before changing any election rule. That flipped the burden. Instead of a citizen suing after being blocked, the government stopped the discriminatory rule before it ever took effect. Mississippi's registration numbers moved fast because the barrier was gone, not just challenged.

The Civil Rights Act of 1964 attacked a different problem: private discrimination with no government actor to sue under the 14th Amendment, which only restrains the state. Congress reached hotels and restaurants instead through the commerce clause, reasoning that businesses serving travelers and selling goods shipped across state lines substantially affect interstate commerce, so Congress can regulate how they treat customers. The Supreme Court upheld this in Heart of Atlanta Motel v. United States in 1964.

Both laws show Congress building rights enforcement directly into federal power, not waiting for courts to strike down state laws case by case. That direct federal role is what the Court narrowed in Shelby County v. Holder in 2013, which struck down the formula deciding which places needed preclearance, freeing those states to change voting rules without advance federal approval.