A majority of the court appeared skeptical of a challenge to Louisiana’s voting map. The challengers had argued the state impermissibly relied on race to draw its map.

The U.S. Supreme Court heard arguments on Monday in a bid by Louisiana officials and civil rights groups to preserve an electoral map that raised the number of Black-majority congressional districts in the state and prompted a challenge by non-Black voters.

Several conservative justices were skeptical that the Voting Rights Act’s attempts to redress past discrimination can coexist with the Equal Protection Clause.