The court declined to hear an appeal filed by the American Civil Liberties Union, which challenged the law. ...
A federal judge blocked the state's voter ID law in March 2012 soon after it took effect and entered a permanent injunction in April, finding the measure would deter or prevent a substantial number of voters who lack photo identification from casting ballots, and place an unnecessary burden on the poor and minorities.
The 7th U.S. Circuit Court of Appeals blocked the decision and subsequently ruled in October that the law was constitutional. Wisconsin's Supreme Court upheld the voter ID law in a separate ruling.
This is obviously a very significant ruling.