By Elise Winland, Zeale News - The U.S. Supreme Court’s April 29 ruling on Louisiana v. Callais has sparked a wave of redistricting activity in Republican-led states, with Tennessee, South Carolina, Alabama, and Mississippi moving to reshape congressional maps... As Zeale News previously reported, the high court’s 6-3 ruling struck down Louisiana’s congressional map, which included a second majority-black district, as an unconstitutional racial gerrymander. That decision narrowed when states may intentionally draw majority-minority districts under the Voting Rights Act.