COLUMBIA — The American Civil Liberties Union wants a role in a federal lawsuit over South Carolina’s new voter ID law.

The ACLU said in court papers Friday it represents three South Carolina voters who have been unable to get the photo identification required by the law in order to vote. Two are black, and one is white.

The U.S. Justice Department rejected South Carolina’s law in December, saying it failed to meet requirements of the 1965 Voting Rights Act. That law requires the Justice Department to approve changes to South Carolina’s election laws because of the state’s past failure to protect blacks’ voting rights.

South Carolina Attorney General Alan Wilson has sued U.S. Attorney General Eric Holder, arguing the U.S. Justice Department was wrong to reject the law enacted last year.