Ratified on July 9, 1868, the Fourteenth Amendment granted citizenship to all persons born or naturalized in the United States, including formerly enslaved people, and guaranteed equal protection under the law. Drafted during Reconstruction under the leadership of Congressman John Bingham, it overturned the Dred Scott decision and established birthright citizenship. Its equal protection and due process clauses would become the constitutional foundation for nearly every major civil rights ruling of the twentieth century.