On October 28, 1919, Congress passed the Volstead Act providing for enforcement of the Eighteenth Amendment to the Constitution, ratified nine months earlier. Known as the Prohibition Amendment, it prohibited the “manufacture, sale, or transportation of intoxicating liquors” in the United States.
The movement to prohibit alcohol began in the early years of the nineteenth century when individuals concerned about the adverse effects of drink began forming local societies to promote temperance in consumption of alcohol. The first temperance societies were organized in New York (1808) and Massachusetts (1813). Members, many of whom belonged to Protestant evangelical denominations, frequently met in local churches. As time passed, most temperance societies began to call for complete abstinence from all alcoholic beverages.
Source: Library of Congress
Same philosophy still in effect for drugs.