"Intrade Closes To U.S. Bettors, Bowing To Pressure From Regulators."

Legal hassles thwart a guilty pleasure.

“It is against the law to solicit U.S. persons to buy and sell commodity options, even if they are called ‘prediction’ contracts, unless they are listed for trading and traded on a CFTC-registered exchange or unless legally exempt,” said David Meister, director of the regulator’s enforcement division. The restrictions Intrade and TEN are accused with violating “enable the CFTC to police market activity and protect market integrity,” he added.

Got that? I notice "unless legally exempt." How about legally exempting it then?