In a ruling that raises more questions that it resolves, the U.S. Supreme Court struck down Arizona’s proof-of-citizenship requirement for federal voter registration forms. In Arizona v. Inter Tribal Council of Arizona, Inc., a 7-2 majority determined that the National Voter Registration Act of 1993 preempts the state requirement. In the short term, this means that those who register to vote through a federal form only need to sign the form, swearing to be U.S. citizens. Georgia, Kansas and Alabama have proof-of-citizenship requirements identical to Arizona’s, which also seem to be negated now. But in reacting to the court’s decision, detractors of the nullified state requirement said they were still concerned about a back-door option created by the ruling. “What the Supreme Court gave the federal government with one hand, it suggested could soon be taken away with the other,” wrote Richard Hasen, a political science professor from the University of California, Irvine School of Law, in a Daily Beast column.* That’s because the ruling allows Arizona to ask the federal Election Assistance Commission to add proof-of-citizenship as part of the federal registration form; if the commission — which currently has no appointed commissioners — rejected the request, then the state could take that request to court.