This past week, the United States filed its "Reply in Support of Motion to Dismiss in Part and for Jurisdictional Discovery" in Bryant v. Holder, the case currently pending in the Southern District of Mississippi. The short of DOJ's argument is that none of the plaintiffs have alleged sufficient facts to support Article III standing. With respect to plaintiff Bryant (the Lieutenant Governor of Mississippi), the government argues that one of his claims should be dismissed outright. With respect to the other claims, the government argues that the district court should permit further discovery, so that plaintiffs would have the opportunity to allege sufficient facts (if possible) to establish the requisite injury in fact.
You can access the United States's motion here.