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 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.