Constitutional Law in 1919–1920. II: The Constitutional Decisions of the Supreme Court of the United States in the October Term, 1919

From the historical point of view no more interesting case was decided last term than that of Missouri v. Holland, in which a bill in equity brought by the state of Missouri to prevent a game warden of the United States from attempting to enforce the Migratory Bird Treaty Act of July 3, 1918, and the regulations made by the secretary of agriculture in pursuance of this act was finally dismissed, Justices Van Devanter and Pitney dissenting without opinion.The objectors to the statute and the underlying treaty based their argument upon the Tenth Amendment, supplemented by the proposition that the control of migratory birds within their respective limits is a power reserved to the states, and from these premises they proceeded to draw the conclusion that “what an act of Congress could not do unaided, in derogation of the powers reserved to the states, a treaty cannot do.” But, Justice Holmes answers in his opinion for the court, the treaty-making power is expressly delegated to the United States, treaties made under the authority of the United States are the supreme law of the land, and by article 1, section 8, Congress may pass all laws necessary and proper to carry valid treaties into effect.