Human: Who was the president of the United States during the Prohibition of Alcohol? Assistant: 
The president of the United States was Woodrow Wilson. Wilson was the 28th president of the United States, serving from 1913 to 1921. He was the only president to serve during both world wars. During the first world war, Wilson led the United States into war with Germany and Austria-Hungary, and he was a key player in the peace negotiations after the war. He also presided over the creation of the League of Nations.