The U.S. Department of Justice (DOJ) is working to enforce nationwide the Supreme Court’s ruling in Louisiana v. Callais, which limited the use of race in redistricting under Section 2 of the Voting Rights Act. In a 6–3 decision on April 29, the Supreme Court struck down a map that gave Louisiana a second black-majority congressional district, ruling it an “unconstitutional racial gerrymander” even though the map was intended to comply with Section 2 of the 1965 federal Voting Rights Act. Section 2 prohibits voting practices or procedures that discriminate based on race, color, or membership in a large language-minority group such as American Indian, Asian American, Alaskan Native, or American Hispanic....