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

In January 1917, the 65th Congress convened, in which the dries outnumbered the wets by 140 to 64 in the Democratic Party and 138 to 62 among Republicans. With America's declaration of war against Germany in April, German Americans, a major force against prohibition, were sidelined and their protests subsequently ignored. In addition, a new justification for prohibition arose: prohibiting the production of alcoholic beverages would allow more resources—especially grain that would otherwise be used to make alcohol—to be devoted to the war effort. While wartime prohibition was a spark for the movement, World War I ended before nationwide Prohibition was enacted.
A resolution calling for a Constitutional amendment to accomplish nationwide Prohibition was introduced in Congress and passed by both houses in December 1917. By January 16, 1919, the Amendment had been ratified by thirty-six of the forty-eight states needed to assure it passage into law. Eventually, only two of those states—Connecticut and Rhode Island—failed to ratify it. On October 28, 1919, Congress passed enabling legislation, known as the Volstead Act, to enforce the Eighteenth Amendment when it went into effect in 1920.
• Start of national prohibition (January 1920)
Prohibition began on January 17, 1920, when the Eighteenth Amendment went into effect. A total of 1,520 Federal Prohibition agents (police) were given the task of enforcing the law.