Arizona Attorney General Tom Horne said the suit, filed Thursday, challenged a part of the law that requires Arizona and other jurisdictions -- mainly in the South -- to get permission, or "pre-clearance" from the Justice Department for changes to voting procedures, The Wall Street Journal reported.
"The Voting Rights Act plays a vital role in our society by ensuring that every American has the right to vote and to have that vote counted," Attorney General Eric Holder said in a statement. "The provisions challenged in this case, including the pre-clearance requirement, were reauthorized by Congress in 2006 with overwhelming and bipartisan support."
The lawsuit was filed in federal court in the District of Columbia.
Horne said Arizona was subject to the Justice Department procedure even though the state demonstrated fairness to racial minority voters, NBC News said.
"Arizona is still penalized for archaic violations that were corrected with the implementation of bilingual ballots prior to the 1974 elections," Horne said, adding Arizona, in 1974, became the second state to elect a Hispanic governor.
The lawsuit says the Voting Rights Act is unconstitutiona "because it suspects all changes to state election law, however innocuous, until pre-clearance is given by the federal government," Horne said.
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