What must claims demonstrate to qualify under supplemental jurisdiction?

Claims must demonstrate that they relate to the original claims already in federal court to qualify under supplemental jurisdiction. This relationship is essential because supplemental jurisdiction allows a federal court to hear additional claims that are not independently subject to federal jurisdiction, provided they arise from the same common nucleus of operative fact as the claims already before the court. This principle is rooted in judicial efficiency and aims to resolve all related issues in a single legal proceeding.

When claims are related, they often address overlapping facts, parties, or legal issues, which helps streamline the litigation process and avoids the need for separate trials that could lead to inconsistent rulings and judicial inefficiency. Therefore, demonstrating this relationship is crucial for a claim to be considered under supplemental jurisdiction.