Arizona Law Requiring Voters Prove Citizenship Is Struck Down

PHOENIX (FoxNews.com) - A federal appeals court on Tuesday struck down a key part of Arizona's law requiring voters to prove they are citizens before registering to vote and to show identification before casting ballots.

The decision by a three-judge panel of the 9th U.S. Circuit Court of Appeals found that the law requiring voters to prove their citizenship while registering is inconsistent with the National Voter Registration Act. That federal law allows voters to fill out a mail-in voter registration card and swear they are citizens under penalty of perjury, but doesn't require them to show proof as Arizona's law does.

The ruling left in place a requirement that voters provide proof of identity when casting ballots.