Led by the ASL and WCTU in 1917 Congress passed the 18th Amendment (prohibition) to conserve grain and to eliminate corruption, though it seemed like a good idea at the time it ended up being repealed by the 21st Amendment in December 5, 1933 due to an increase in lawlessness.
IMPORTANT THINGS TO REMEMBER:
1) The American people greatly disliked the prohibition act, making it unenforceable.
2) The prohibition acts were put into place because women thought alcohol led to wife beating and child abuse, industrialists were concerned it affected labor productivity, and te prohibition would end machine politics, and help Americanize immigrants.
3) Prohibition brought about new types of crime including bootleggers, moonshine, bathtub gin, rum runners, and speakeasies.