Congress passed the 18th amendment to the U.S. Constitution on Dec. 18, 1917. Prior to the full Congress proposing the amendment to the states for ratification, the Senate passed the resolution on Aug. 1, 1917, and the House of Representatives subsequently passed a revised resolution on Dec. 17, 1917.
The 18th amendment was the first amendment to contain a provision that set a deadline for ratification by the states. It was officially ratified by the states on Jan. 16, 1919, with only two states voting against ratification. The 18th Amendment prohibited the manufacture, sale and transportation of alcoholic beverages in the U.S. Although the amendment made it difficult to legally obtain alcoholic beverages, it did not prohibit the purchase or consumption of alcohol.