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,
Repeal of Prohibition in the United States used his expertise as the Attorney General who first enforced Prohibition to promote a plan to expedite its repeal through state conventions rather than the state legislatures. The Cullen–Harrison Act, signed by President Franklin D. Roosevelt on March 22, 1933, authorized the sale of 3.2 percent beer (thought to be too low an alcohol concentration to be intoxicating) and wine, which allowed the first legal beer sales since the beginning of Prohibition on January 16, 1920. In 1933 state conventions ratified the Twenty-first Amendment, which repealed Prohibition. The Amendment was fully ratified on December 5, 1933. Federal laws enforcing Prohibition