Elected officials in Arizona are praising the Supreme Court's decision on voting rights.

Gov. Jan Brewer and Attorney General Tom Horne applauded the ruling Tuesday that said requiring Arizona and other states to seek federal approval for changes to election policies is unconstitutional because it relies on 40-year-old data that does not reflect racial progress in the U.S.

The court didn't strike down the provision of the law that determines which states are subject to federal approval, but it said it cannot be enforced until Congress creates a new formula.

Horne called the provision a huge administrative burden.

But civil rights leaders in Arizona claim the preclearance rule is necessary because elected leaders continue to back policies that disenfranchise certain voters.