In an opinion by conservative Justice Antonin Scalia, a 7-2 Supreme Court held this morning that an Arizona law requiring voting officials to reject voter registration forms that are “not accompanied by concrete evidence of citizenship” conflicts with a federal law requiring states to use a uniform voter registration form for federal elections. Scalia once justified an anti-immigrant opinion with a reference to laws excluding “freed blacks” from southern states, and he called the Voting Rights Act a “perpetuation of racial entitlement. So his authorship of this opinion is both unexpected and a sign of the weakness of Arizona’s legal position in defending this law.