The United States broke nearly every treaty it ratified, and for most of that history it did so legally. The episode traces the machine: the Doctrine of Discovery imported in Johnson v. M'Intosh, the Marshall Trilogy's domestic dependent nations, and Lone Wolf v. Hitchcock in 1903, which held Congress could break any treaty at will. It steelmans the legal defense before weighing its cost.
Scholars dispute whether plenary power rests on thin constitutional ground, whether the trust doctrine is a shield or a fiction, and whether the discovery doctrine can be removed from U.S. law. Historians also disagree on how well-intentioned allotment policy was.



