Walthall County, Miss., has been forced to clean up its voter rolls after it was sued in April by the American Civil Rights Union for having more registered voters than actual voting-age residents.

ACRU Chairman Susan A. Carleson declared a victory, saying “this is historic and should have been done 20 years ago.

“With the Justice Department on the war path against state election integrity laws, it couldn’t come at a better time,” she added.

Former Justice Department attorney J. Christian Adams, who helped file the lawsuit, said that since the federal government did nothing to clean up the voter rolls, ACRU had to step in.

“This case should have been called United States v. Walthall County instead of ACRU v. Walthall County,” Adams said. “We’re doing the job that Attorney General Eric H. Holder Jr. won't do. In fact, he's too busy suing Texas for its new photo ID law and abusing power in other ways to harass states that are trying to ensure election integrity."

ACRU also sued Mississippi's Jefferson Davis County for having more registered voters than voting-age residents. The trial is set for June 2014.