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,
Twenty-first Amendment to the United States Constitution 16, 1919, the result of years of advocacy by the temperance movement. The subsequent passage of the Volstead Act established federal enforcement of the nationwide prohibition on alcohol. As many Americans continued to drink despite the amendment, Prohibition gave rise to a profitable black market for alcohol, fueling the rise of organized crime. Throughout the 1920's, Americans increasingly came to see Prohibition as unenforceable, and a movement to repeal the Eighteenth Amendment grew until the Twenty-first Amendment was ratified in 1933. Section 1 of the Twenty-first Amendment expressly repeals the Eighteenth Amendment. Section 2 bans the importation of alcohol into