In Harper v. Virginia Board of Elections, the U.S. Supreme Court overrules its earlier decision in Breedlove v. Suttles (1937) and declares that the use of a poll tax at state elections is unconstitutional. The Court holds that discrimination based on economic status is in violation of the equal protection clause of the Fourteenth Amendment. As a result of this ruling and the passage of the Twenty-fourth Amendment, poll taxes can no longer be used in federal or state elections.