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 the Constitution had ushered in a period known as Prohibition, during which the manufacture, distribution, and sale of alcoholic beverages was illegal. Passage of the Eighteenth Amendment in 1919 was the crowning achievement of the temperance movement, but it soon proved highly unpopular. Crime rates soared under Prohibition as gangsters, such as Chicago's Al Capone, became rich from a profitable, often violent black market for alcohol. The federal government was incapable of stemming the tide: enforcement of the Volstead Act proved to be a nearly impossible task and corruption was rife among law enforcement agencies. In 1932, wealthy industrialist John