Enforcement of the prohibition laws of the United States. Message from the President of the United States transmitting a report of the National Commission on Law Observance and Enforcement relative to the facts as to the enforcement, the benefits, and the abuses under the prohibition laws, both before and since the adoption of the Eighteenth Amendment to the Constitution. January 20, 1931. -- Referred to the Committee on Judiciary and ordered to be printed. [electronic resource]