Bureau of Prohibition Bureau of Prohibition The Bureau of Prohibition (or Prohibition Unit) was the federal law enforcement agency formed to enforce the National Prohibition Act of 1919, commonly known as the Volstead Act, which elaborated upon the 18th Amendment to the United States Constitution regarding the prohibition of the manufacture, sale, and transportation of alcoholic beverages. When it was first established in 1920, it was a unit of the Bureau of Internal Revenue. On April 1, 1927, it became an independent entity within the Department of the Treasury, changing its name from the Prohibition Unit to the Bureau of Prohibition. In 1930,
Eighteenth Amendment to the United States Constitution its ratification. That clause of the amendment was challenged, with the case reaching the US Supreme Court. It upheld the constitutionality of such a deadline in "Dillon v. Gloss" (1921). The Supreme Court also upheld the ratification by the Ohio legislature in "Hawke v. Smith" (1920), despite a petition requiring that the matter go to ballot. This was not the only controversy around the amendment. The phrase "intoxicating liquor" would not logically have included beer and wine (as they are not distilled), and their inclusion in the prohibition came as a surprise to the general public, as well as wine