BETTING on professional sports is currently illegal in most of the United States outside of Nevada. I believe we need a different approach.

For more than two decades, the National Basketball Association has opposed the expansion of legal sports betting, as have the other major professional sports leagues in the United States. In 1992, the leagues supported the passage by Congress of the Professional and Amateur Sports Protection Act, or Paspa, which generally prohibits states from authorizing sports betting.

But despite legal restrictions, sports betting is widespread. It is a thriving underground business that operates free from regulation or oversight. Because there are few legal options available, those who wish to bet resort to illicit bookmaking operations and shady offshore websites. There is no solid data on the volume of illegal sports betting activity in the United States, but some estimate that nearly $400 billion is illegally wagered on sports each year.

Times have changed since Paspa was enacted. Gambling has increasingly become a popular and accepted form of entertainment in the United States. Most states offer lotteries. Over half of them have legal casinos. Three have approved some form of Internet gambling, with others poised to follow.