In 2009 Senator Raymond Lesniak sued that PASPA was discriminatory against the 46 states that weren’t grandfathered in. Nevada had Vegas, home of gambling, where sportsbooks were established. Online Sportsbooks for Legal Betting in the USAįour states were exempt from the PASPA ruling: Oregon, Delaware, Montana, and Nevada. State by State Betting Guides and Updates Which States are Unlikely to Legalize Sports Betting? States With Legal Sports Betting in the USA