Beer in the United States
On January 16, 1919, the Eighteenth Amendment to the United States Constitution was enacted into law, creating the Prohibition era, wherein the production, sale and transportation of alcoholic beverages was made illegal. All legal American brewing came to a halt when prohibition was imposed, though the earlier temperance movement had already reduced the number of breweries significantly. Only a few breweries, mainly the largest, were able to stay in business by manufacturing near beer, malt syrup, or other non-alcohol grain products, in addition to soft drinks such as colas and root beers. Production and shipping of alcohol was largely confined to illegal operations that could deliver compact distilled beverages—smuggled rum and domestic moonshine—more efficiently and reliably than bulkier products such as beer.
Temperance movement in the United States
Energized by the anti-German sentiment during World War I, the ASL achieved its main goal of passage on December 18, 1917—the 18th Amendment. Upon ratification by three-fourths of the state legislatures by January 16, 1919, established National Prohibition. (the Amendment came into effect on January 16, 1920)
Prohibition banned "the manufacture, sale, and transportation of alcoholic beverages in the United States and its possessions." However, Prohibition did not outlaw the private possession or consumption of alcohol products.
Harvard Medical School professors Jack Harold Mendelson and Nancy K Mello, write with regard to temperance sentiment in contemporary America that "rallying cries once structured in terms of social order, home and basic decency are now framed in terms of health promotion and disease prevention." Original temperance organizations such as the Woman's Christian Temperance Union and International Organization of Good Templars continue their work today, while new "temperance enterprises found support in a variety of institutional venues" such as the Marin Institute for the Prevention of Alcohol and Other Drug Problems and Center for Science in the Public Interest. These temperance organizations focus their efforts on "promoting increased taxation, reducing alcohol advertising, and monitoring of the beverage industry", as well as the supporting of Sunday blue laws, which prohibit the sale of alcohol on Sundays.