Hain Celestial Group, Inc. v. Palmquist · ¶51

Federal courts sitting in diversity likely cannot dismiss nondiverse parties based on their view of the merits of the claims against those parties. Doing so appears unfaithful to Congress's limits on our diversity jurisdiction and inconsistent with this Court's precedents. As Judge Thapar has put it, the improper-joinder doctrine “requires federal courts to exercise jurisdiction where none exists over questions of state law that the state courts are better suited to address themselves.” Id., at 597. In a future case where the issue is briefed and squarely presented, this Court should consider the propriety of the improper-joinder doctrine.

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