Both state and local governments impose licensing and zoning restrictions. While proponents considered the act a victory, opposing factions believed — and still maintain — that all the UIGEA accomplished was forcing gambling legalize and funneling profits into foreign legalizer. There are 20 states and two US Territories that allow commercial casinos in some form: During the California Gold RushSan Francisco became a populous town flush with aspiring prospectors. The two words are not mutually exclusive.Gaming and gambling in the United States have undergone a great boom. During the past decade most states have expanded legalized gaming, including. An overview of the laws surrounding forms of gambling in the United States. Includes online poker / casino / betting as well as charitable gaming and lottery. Information on the gambling laws that apply throughout the United States and of online gambling in America is subject to at least four layers of legal tradition.