Master The Supreme Court articulated the Charming Betsy canon: U.S. statutes should not be construed to violate international law if another reasonable interpretation is available. with this comprehensive case brief.
Murray v. The Schooner Charming Betsy is a foundational early Supreme Court decision, authored by Chief Justice John Marshall, that established a now-canonical principle of statutory interpretation in U.S. law. Decided in the aftermath of the United States' "Quasi-War" with France, the case presented a collision between domestic enforcement of congressional enactments and the neutral rights of other nations under the law of nations (customary international law). The decision famously instructs that an Act of Congress should never be construed to violate international law if any other possible construction remains.
The case's significance far transcends its historical setting. The "Charming Betsy canon" has become a staple in courses on International Law, Federal Courts, and Legislation/Regulation because it mediates the relationship between domestic statutes and international norms. It preserves congressional supremacy while promoting comity and predictability in foreign affairs: courts will respect international law unless Congress unmistakably indicates otherwise. Courts continue to cite it across subject areas—from antitrust and environmental law to human rights—when interpreting statutes with foreign-relations implications.
6 U.S. (2 Cranch) 64 (1804) (U.S. Supreme Court)
During the Quasi-War between the United States and France, Congress enacted statutes (commonly referred to as the Non-Intercourse Acts) that restricted commercial intercourse with France and authorized seizures and forfeitures in certain circumstances. The schooner Charming Betsy was American-built but, by the time relevant here, was owned by Jared Shattuck, an American-born merchant long domiciled in St. Thomas (a Danish colony). Shattuck conducted trade under Danish papers and colors and was under Danish protection; he was alleged to have been naturalized as a Danish subject. While engaged in a voyage between a neutral Danish port and a French West Indian island, the Charming Betsy was seized by a U.S. vessel and brought for condemnation in a U.S. prize court on the theory that the ship and trade fell within the prohibitions of the U.S. statutes suspending intercourse with France. The United States argued that the ownership and the ship's American origin rendered the vessel subject to forfeiture; Shattuck contended that as a Danish (neutral) subject operating a Danish vessel on a neutral voyage, any condemnation would violate neutral rights under the law of nations. Lower federal courts condemned the vessel, and the case reached the Supreme Court on review.
Whether the Non-Intercourse Acts should be construed to authorize the seizure and condemnation of a neutral Danish vessel, owned by a person under Danish protection and engaged in neutral trade with a French colony, thereby infringing neutral rights recognized by the law of nations.
An Act of Congress ought never to be construed to violate the law of nations if any other possible construction remains; consequently, a statute will not be read to infringe neutral rights or contravene customary international law unless such a construction is unavoidable based on clear congressional intent.
The relevant Acts of Congress did not authorize the condemnation of the Charming Betsy. Properly construed in light of international law, the statutes did not extend to a neutral Danish vessel under Danish protection engaged in neutral commerce. The condemnation was reversed and the vessel ordered restored.
Chief Justice Marshall began by assessing the national character of the vessel and her owner. Although American-built, the Charming Betsy sailed under Danish papers and colors, and her owner, Jared Shattuck, was domiciled in St. Thomas and under Danish protection. The Court treated the transaction placing the ship under Danish character as bona fide; a vessel's national character follows genuine ownership and flag, not merely its place of construction. The voyage—from a neutral Danish island to a French island—was lawful neutral commerce under the law of nations in the absence of contraband or blockade. Turning to the statutes, the Court emphasized that they targeted U.S. citizens and persons "within the United States or under their protection" trading with France, and they authorized seizures in specified circumstances. Nothing in the text unmistakably extended forfeiture to neutral foreign vessels or to foreign subjects under the protection of their own sovereign. Reading the Acts to reach that far would put the United States in breach of neutral-rights norms universally recognized at the time. Applying the interpretive presumption now known as the Charming Betsy canon, the Court refused to adopt a construction that would violate international law when an alternative, textually plausible reading avoided the conflict. Because Congress had not clearly manifested an intent to override the law of nations and condemn neutral trade, the Court concluded the seizure was unauthorized. The American origin of the hull could not, by itself, convert the vessel into American property subject to U.S. penalties once a bona fide transfer to a neutral subject under a neutral flag had occurred.
For law students, Charming Betsy is a bedrock case in statutory interpretation and foreign relations law. It supplies a durable clear-statement rule: courts presume Congress legislates in harmony with international law and will not infer an abrogation of neutral rights or other customary norms absent explicit direction. The canon: (1) advances comity and predictability in international dealings; (2) respects separation of powers by requiring Congress—not courts—to decide whether to breach international norms; and (3) has enduring cross-disciplinary reach, often invoked in antitrust, environmental, and human rights cases when statutes have extraterritorial or foreign-relations effects. It is frequently paired with, but distinct from, the presumption against extraterritoriality and other clear-statement doctrines.
It is a rule of statutory interpretation stating that courts should avoid reading a U.S. statute to violate international law if a reasonable alternative interpretation is available. Only a clear, unmistakable statement from Congress will justify a construction that contravenes the law of nations.
No. The canon is interpretive, not hierarchical. If a statute is ambiguous, courts choose the reading consistent with international law. But if Congress clearly directs a result that conflicts with international law, the clear command controls domestically, even though it may put the United States in breach internationally.
Both are clear-statement canons, but they address different concerns. The presumption against extraterritoriality asks whether Congress intended a statute to apply outside U.S. territory. Charming Betsy asks whether Congress intended to violate international law. A statute can apply abroad without violating international law, and vice versa; courts often consider both canons when interpreting statutes with foreign elements.
The Court treated the Charming Betsy as a neutral Danish vessel because it sailed under Danish papers and bona fide Danish ownership by a person under Danish protection. American construction alone did not make the ship American for purposes of condemnation, and neutral commerce from a Danish island to a French island remained lawful under the law of nations.
Yes. Congress can expressly abrogate or depart from international law. The canon simply requires that such departures be clear. Absent a clear statement, courts will construe statutes to conform to international law to avoid unintended violations of neutral rights or other customary norms.
Modern courts cite Charming Betsy when statutes implicate foreign relations or may affect other nations' rights. For example, in antitrust cases involving foreign conduct, environmental laws with transboundary impacts, or human-rights-related statutes, courts look for interpretations that avoid unnecessary conflicts with international law unless Congress clearly commands otherwise.
Charming Betsy endures as an early yet powerful statement of judicial restraint and international comity. By counseling that courts avoid statutory interpretations that would breach international law when a plausible alternative exists, the decision leaves to Congress—and ultimately to the political branches—the choice to depart from international norms.
For students and practitioners, the case exemplifies the Marshall Court's method of harmonizing domestic statutes with the law of nations, preserving both the integrity of congressional enactments and the United States' standing in the international community. Its canon remains a vital tool across doctrinal areas whenever statutory text intersects with foreign affairs or customary international law.
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