Republicans passed a law in 2011 requiring voters to show photo identification. U.S. District Judge Lynn Adelman blocked the law earlier this year after the American Civil Liberties Union challenged it, calling it unconstitutional. Republican Attorney General J.B. Van Hollen has asked the 7th Circuit Court of Appeals to reverse Adelman.
The court on Tuesday set oral arguments in the case for the morning of Sept. 12. Each side will have 30 minutes to speak.