History: Prohibition Of Alcoholic Beverages, Los Angeles, California, United States

Prohibition created a black market that competed with the formal economy, which already was under pressure. Roosevelt was elected based on the New Deal, which promised economic improvement that was only possible if the formal economy competed successfully against various economic forces, including the black market. This influenced his support for ratifying the Twenty-first amendment, which repealed the Prohibition.
• Post-repeal
The Twenty-first Amendment does not prevent states from restricting or banning alcohol. Following repeal of Prohibition, alcohol could be legally sold in some, but not all, townships or counties within a particular state, while other states continued to enforce prohibition laws. Mississippi, which had made alcohol illegal in 1907, was the last state to repeal Prohibition in 1966. Kansas did not allow sale of liquor "by the drink" (on-premises) until 1987. There are still numerous dry counties and townships in the United States that restrict or prohibit liquor sales.
Additionally, many tribal governments prohibit alcohol on Indian reservations. Federal law also prohibits alcohol on Indian reservations, although this law is currently only enforced when there is a concomitant violation of local tribal liquor laws. The federal law prohibiting alcohol in Indian country pre-dates the Eighteenth Amendment. No constitutional changes were necessary prior to the passage of this amendment, since Indian reservations and U.S. territories have always been considered areas of direct federal jurisdiction.