proof of citizenship to register to vote is invalid as preempted by the National Voter Registration Act of 1993 (NVRA) and that the requirement to provide voter identification at the polling place is valid. However, in April 2011, the court granted Arizona's petition for en banc review of this ruling, and it heard oral arguments on June 21, 2011. In April 2012, the en banc court also held that the requirement to provide proof of citizenship to register to vote is invalid as preempted by the NVRA and that the requirement to provide voter identification at the polling place is valid. The Supreme Court of the United States declined to stay the ruling on June 28, 2012. In July 2012, Arizona submitted to the Supreme Court a petition for writ of certiorari to review the Ninth Circuit's ruling that the state's proof of citizenship requirement is preempted by the NVRA. The Court granted the petition in October 2012, and it heard oral arguments on March 18, 2013. On June 17, 2013, the Supreme Court affirmed, in a 7–2 vote with Justice Antonin Scalia delivering the Court's opinion, the Ninth Circuit's ruling that Arizona's proof of citizenship requirement is preempted by the NVRA. References External links Proposition 200 2004 Arizona elections 2004 ballot measures Arizona ballot measures Initiatives in the United States United States immigration law