Big doings at the high court. Photo: Graeme Sloan/Bloomberg/ Getty Images Near the end of its previous term, the Supreme Court made a surprising request for a reargument of Louisiana v. Callais , a case about the application of the Voting Rights Act to congressional redistricting. The Court was clearly inviting a challenge to the constitutionality of a key VRA provision that has prevented the dilution of Black voting influence. The most recent time the Court applied the VRA in a similar case in