Law Commons^™

Is federal diversity jurisdiction case-specific or claim-specific? Consider a state-law case in federal court between a Texas plaintiff and two defendants—one from California and the other from Texas. The complete-diversity rule taught to every first-year law student makes clear that, when the diversity defect is noted, the court lacks subject-matter jurisdiction over the action as a whole. The court cannot, therefore, proceed with either claim as long as the nondiverse claim remains. But does the court’s subject-matter jurisdiction nevertheless extend to the diverse claim, such that the case can continue if the spoiler is dismissed? This question is both pervasive …