In the law of the United States, diversity jurisdiction is a form of subject-matter jurisdiction in civil procedure in which a United States district court in the federal judiciary has the power to hear a civil case when the amount in controversy exceeds $75,000 and where the persons that are parties are "diverse" in citizenship or state of incorporation (for corporations being legal persons), which generally indicates that they differ in state and/or nationality. Diversity jurisdiction and federal-question jurisdiction (jurisdiction over issues arising under federal law) constitute the two primary categories of subject matter jurisdiction in U.S. federal courts.