Montana also has card.mountaineer casino and race track west virginia WHEN DID THE EL CORTEZ LAS VEGAS CASINO OPEN Each state has enacted different laws pertaining to these topics. The states also have differing legal gambling ages, with some states requiring the same minimum age for all The Department of Justice maintains that, under the Wire Act, all Internet gambling by bettors in the United States is illegal. In various jurisdictions, the gambling age is the minimum age which one can gamble. In some countries, gambling is illegal for all people regardless of age, so a minimum age does not exist. In other countries, there are different age limits for different types of gambling. tactics used to target younger or potentially under - age gamblers. Internet gambling falls under the grey area of person-to-person wagering under the Canadian Criminal Code, thus, owning and operating an on-line gambling company is currently illegal in Canada.