The justices asked that the case, which has implications for the political power of Black voters, be reargued next term.

The Louisiana case could affect the balance of power in a narrowly divided Congress and shape how states factor race into the creation of future electoral maps.

The U.S. Supreme Court declined on Friday to rule in a dispute involving a Louisiana electoral map that raised the number of Black-majority congressional districts in the state, with the justices ordering the case to be argued again.