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 proposed amendment was adopted on December 5, 1933. It is the only amendment to have been ratified by state ratifying conventions, specially selected for the purpose. All other amendments have been ratified by state legislatures. It is also the only amendment that was approved for the explicit purpose of repealing a previously existing amendment to the Constitution. The Twenty-first Amendment ending national prohibition became officially effective on December 15, though people started drinking openly before that date. The various responses of the 48 states is as follows: The following states ratified the amendment: Ratification was completed on December 5, 1933.