WASHINGTON (AP) — The Supreme Court on Wednesday hollowed out a landmark Civil Rights-era law that has increased minority representation in Congress and elsewhere, striking down a majority Black congressional district in Louisiana and opening the door for more redistricting across the country that could aid Republican efforts to control the House. In a 6-3 ruling , the court’s conservative majority found that Louisiana district represented by Democrat Cleo Fields relied too heavily on race. Chief Justice John Roberts had described the 6th Congressional District as a “snake” that stretches more than 200 miles (320 kilometers) to link parts of Shreveport, Alexandria, Lafayette and Baton Rouge. “That map is an unconstitutional gerrymander,” Justice Samuel Alito wrote for the six conservatives. The effect of the ruling may be felt more strongly in 2028 because most filing deadlines for this year’s congressional races have passed.…