Chapter 17 examines the Anti-Saloon League’s pivot to pressing for the Eighteenth (Prohibition) Amendment. In 1912 former president Theodore Roosevelt ran as a third-party Progressive against his handpicked Republican successor, William Howard Taft, as Taft had undermined Roosevelt’s signature Pure Food and Drug Act, which included purity standards on alcohol. The electoral split gave the presidency to Democrat Woodrow Wilson, who was agnostic toward prohibition. World War I and the accompanying “cult of military sobriety” strengthened prohibitionist sentiment, while the election of 1916 secured the legislative supermajorities needed for a prohibition amendment. Once passed in December 1917, the amendment was ratified with unprecedented speed by January 1919, to come into effect one year later. In the meantime, drys pushed for a “wartime prohibition” until demobilization was complete. With prohibition in America secured, activists looked abroad through the World League Against Alcoholism (WLAA) and its chief emissary, Pussyfoot Johnson.