Before the states ratify the Twenty-first Amendment, the prosecution of Clause Chambers and Byrum Gibson for possessing and transporting intoxicating liquor in violation of the National Prohibition Act begins. Their prosecution continues even after Prohibition’s repeal. The defendants ask the court to dismiss their case because the laws for which they have been arrested are no longer valid. In United States v. Chambers, the U.S. Supreme Court agrees that prosecution under a repealed law cannot go forward.