Sports Betting in United States
Casual sports betting has always been popular in the US, from office pools to friendly wagers among friends. Organized sports betting, however, is limited by law. In the United States, the Professional and Amateur Sports Protection Act of 1992 makes it illegal to operate a "betting, gambling or wagering scheme", with the exception of Nevada, Delaware, Oregon and Montana.
The only state to challenge this “federally legislated discrimination” has been New Jersey, when it allowed sports bets to be placed at its horse racing tracks and in casinos, invoking outrage from all major sports associations. The matter is expected to ultimately play out in the US Supreme Court in 2013 or 2014, setting a precedent for other states either way.
Online Betting in United States
As with most forms of online gambling, sports betting in America has been heavily restricted since the passing of the Unlawful Internet Gambling and Enforcement Act of 2006. Luckily, however, the federal government changed the law in 2012, allowing individual states to launch their own online gambling operations, so long as they were limited to play within state borders.
As of December 2013, three states have launched their online operations: Nevada, New Jersey and Delaware all came live throughout the latter half of the year. Nevada was the first, and run a number of online sportsbooks for punters in Las Vegas to take advantage of.
There has also been a proliferation of American internet betting is sure to make a major comeback.