Mississippi began to make some racial progress but white supremacy was resilient, especially in rural areas. In 1965 Congress passed the federal Voting Rights Act, which provided for federal oversight and enforcement to facilitate registration and voting in areas of historically low turnout. Mississippi's legislature passed several laws to dilute the power of black votes. Only with Supreme Court rulings and more than a decade of cooling did black voting become a reality in Mississippi. The seeds planted during Freedom Summer bore fruit in the 1980s and 1990s, when Mississippi elected more black officials than any other state. Since redistricting in 2003, Mississippi has had four congressional districts. Mississippi's 2nd congressional district, covering a concentration of black population in the western part of the state, including the Mississippi Delta, is black majority.