The case in question dates back to 2013, when the Obama DOJ joined voting rights advocates, Democratic lawmakers, and a group of Texas residents in suing to block a draconian voter ID law in Texas. This coalition scored a major victory last year when a federal appeals court ruled that the law discriminated against minorities and needed to be softened. The Texas legislature is currently working on amending the law.
However, the appeals court left open a key question in the case: whether the discrimination was intentional. It sent the case back to federal district court for a determination on that issue. The question of intent is significant. The finding of a discriminatory effect necessitates altering the law. But if the court finds that Texas acted with a discriminatory intent, the judge could throw the law out entirely.