Hilton v. Guyot, 159 U.S. 113 (1895)
Hilton v. Guyot is the Supreme Court's foundational decision on the recognition and enforcement of foreign-country judgments in U.S.
Absent a treaty or statute, must U.S. courts give conclusive effect to a foreign-country money judgment, or is such a judgment only prima facie evidence of the claim, particularly where the foreign nation does not accord conclusive effect to U.S. judgments (lack of reciprocity)?
In the absence of a governing treaty or statute, the effect to be given a foreign-country judgment rests on principles of international comity. A foreign judgment is entitled at least to recognition as prima facie evidence if it was rendered by a court of competent jurisdiction, after due citation or voluntary appearance, upon regular proceedings providing a full and fair opportunity to be heard, is final and conclusive where rendered, and was not obtained by fraud, nor given under a system incompatible with impartial justice or fundamental fairness. Such a judgment may be treated as conclusive on the merits only if the foreign nation, by its own law or practice, accords U.S. judgments similar conclusive effect (reciprocity). As Justice Gray explained, comity "is neither a matter of absolute obligation, on the one hand, nor of mere courtesy and good will, upon the other; it is the recognition which one nation allows within its territory to the… judicial acts of another nation, having due regard both to international duty and convenience, and to the rights of its own citizens."
The French judgments were not entitled to conclusive effect in U.S. courts because France did not accord like conclusiveness to U.S. judgments; accordingly, the judgments were admissible only as prima facie evidence of the plaintiffs' claims. The judgment below was reversed and the case remanded for a new trial, permitting the defendants to contest the merits.
Hilton is the canonical U.S. case defining international comity and the baseline conditions for recognizing foreign-country judgments. Its reciprocity requirement, while innovative, has been criticized and is largely displaced by modern state law and uniform acts (e.g., the Uniform Foreign-Country Money Judgments Recognition Act), which generally accord conclusive effect to qualifying foreign money judgments without demanding reciprocity, subject to enumerated defenses (jurisdiction, due process, fraud, public policy). Still, Hilton's articulation of comity and fairness-based safeguards remains frequently cited, and the case frames how courts balance respect for foreign adjudications against protection of local litigants and public policy.