Johnson's power reached its zenith during Prohibition, which was enacted nationally in 1919 (but did not go into effect until 1920) and lasted until 1933. Prohibition was effectively unenforced in Atlantic City, and, as a result, the resort's popularity grew further. The city then called itself "The World's Playground." This was aided by Johnson who, with his influence and power in the city, made sure that anyone who was serving alcohol, running a brothel, or managing a gambling den wasn't bothered so long as Johnson got a cut of the money. In fact, most of Johnson's income came from the percentage he took on every gallon of illegal liquor sold and on gambling and prostitution operations in Atlantic City. Johnson once said: