The US Supreme Court indicated it will consider outlawing the use of race in drawing voting maps, setting up a blockbuster showdown with implications for dozens of congressional districts with predominantly minority populations.

In a pending case on Louisiana’s congressional map, the justices ordered briefing on whether it’s constitutional to intentionally draw majority-Black districts.

The U.S. Supreme Court signaled on Friday that it will assess the legality of a key component of a landmark federal voting rights law, potentially giving its conservative majority a chance to gut a provision enacted 60 years ago that was intended to prevent racial discrimination in voting.

The justices asked opposing parties in a battle over a Louisiana voting map to submit briefs addressing the matter.

The Supreme Court signaled Friday that it will take a broader look at a high-profile redistricting fight over Louisiana’s congressional map, subtly expanding the scope of an appeal that could weaken the landmark Voting Rights Act.