The Bureau of Prohibition (or Prohibition Unit) was the United States federal law enforcement agency formed to enforce the National Prohibition Act of 1919, commonly known as the Volstead Act, which enforced 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, it became part of the Department of Justice. By 1933, with the repeal of Prohibition imminent, it was briefly absorbed into the FBI, or "Bureau of Investigation" as it was then called, and became the Bureau's "Alcohol Beverage Unit," though, for practical purposes it continued to operate as a separate agency. Very shortly after that, once repeal became a reality, and the only federal laws regarding alcoholic beverages being their taxation, it was switched back to Treasury, where it was renamed the Alcohol Tax Unit. Mission The Bureau of Prohibition's main function was to stop the sale and consumption of alcohol. Agents would be tasked with eliminating illegal bootlegging rings, and became notorious in cities like New York and Chicago for raiding popular nightclubs. Agents were often paid low wages, and the Bureau was notorious for allowing many uncertified people to become agents. Doing so strengthened the bureau, as they were able to hire agents in greater numbers. In 1929, the Increased Penalties Act or Jones Law was passed. The Jones Law increased penalties for violations previously set in the Volstead Act. First time offenders were now expected to serve a maximum of five years and a $10,000 fine as opposed to the previous six months and $1,000 fine. This strengthened animosity toward Prohibition agents, as many of them (such as Major Maurice Campbell, Prohibition administrator of New York City), were already hated for their raids on popular clubs frequented by New York City's elite. Famous agents Its investigators were called prohibition agents, or more colloquially 'Prohis' . Its most famous agent was Eliot Ness. Some of the other famous lawmen who, at some point, carried a Prohi's badge include former Texas Ranger Frank Hamer, full-blooded Cherokee Tom Threepersons, James L. "Lone Wolf" Asher, Chicagoan Pat Roche, and Richard James "Two-Gun" Hart,