South Carolina Gov. Nikki Haley has blasted the decision as political. She probably has a point. The law would have disproportionately affected the poor, who are disproportionately likely, for the reasons outlined above, to lack photo IDs. The poor are disproportionately black, and black people are disproportionately likely to vote Democratic. It would be naive to believe that did not enter into the thinking of the Obama Justice Department.