Principality of Monaco v. Mississippi
Headline: Court denies Monaco leave to sue Mississippi, holding foreign governments cannot sue a U.S. state in federal court without that state’s consent, blocking foreign-state claims over long‑held state bonds.
Holding: The Court ruled that a foreign government may not bring suit against a U.S. state in federal court without that state's consent, and it denied Monaco leave to sue Mississippi over the bonds.
- Prevents foreign governments from suing U.S. states in federal court without the state's consent.
- Denies Monaco leave to sue Mississippi over decades-old bank bonds.
- Confirms states’ immunity even when constitutional clauses appear to allow such suits.
Summary
Background
The Principality of Monaco sought permission to sue the State of Mississippi in this Court over old Mississippi bonds that donors said they had gifted to Monaco in Paris in 1933. The proposed complaint described four counts, arising from two types of 19th‑century state bonds, and alleged the bonds were absolute gifts to Monaco for charitable use.
Reasoning
Mississippi objected on many grounds, but the Court addressed only whether a foreign government can sue a U.S. state in federal court without the state’s consent. The Court examined the Constitution’s language and the framers’ views, reviewed earlier cases and the Eleventh Amendment (which bars many suits against states), and concluded that States retain sovereign immunity from suit by foreign states unless the State consents.
Real world impact
Because the Court found no waiver of that immunity in the constitutional plan, it denied Monaco’s request for leave to sue and left the bonds’ claim unresolved on the merits. The decision means foreign governments generally cannot force U.S. states into federal court to press claims against them without the states’ permission, though foreign governments may still sue private parties in federal courts.
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