March Madness has long been a huge draw for gamblers who came to Las Vegas to place their bets on the tournament while partying at the city's famed casinos.
The stakes will be higher for March Madness this year in some states. People in Ohio, Kansas and Massachusetts will be able to cast online bets on the NCAA basketball tournament.
The gambling industry's national trade group predicts that 1 in 5 American adults will make a bet on Sunday's Super Bowl between the Philadelphia Eagles and Kansas City Chiefs.