Yet neither the federal government nor any other legal commentator has previously identified the way in which the very features of the case that contribute to its political salience also require that it be dismissed for lack of statutory subject-matter jurisdiction. The Supreme Court has placed limits on statutory subject-matter jurisdiction over declaratory judgment actions in which a state seeks a declaration that a state statute is not preempted by federal law—precisely the relief sought in Virginia v. Sebelius. These limits insulate federal courts from the strong political forces surrounding lawsuits that seek federal court validation of state nullification statutes. This Essay identifies these heretofore neglected limits, shows why they demand dismissal of Virginia v. Sebelius, and explains why it is appropriate for federal courts to be closed to this type of suit.