In Harper v. Virginia Board of Elections, the U.S. Supreme Court overrules its decision in Breedlove v. Suttles, declaring that the use of a poll tax at state elections is unconstitutional. The Court holds that such “invidious discrimination” based on economic status violates the equal protection clause of the 14th Amendment. As a result of this ruling and the earlier passage of the 24th Amendment, poll taxes cannot be used in either federal or state elections.