Well, FullTiltPoker was the straw that broke the camels back. Before Black Friday, several big name online poker sites had problems with former employees using their access to scam players out of their money.
The Individuals and sites are based overseas and as a result, international players have little to no way of bringing them to justice. International courts take forever to make a ruling.
So U.S. law makers, pushed by brick and mortar mega billionaire lobbyist, created a law to try and block U.S. players form making bets overseas by way of computer.
U.S. land casinos had to reapply for operator licence to be placed on an exclusion list. ( most casinos have electronic slot machines, and would be considered illegal gaming sites, but money prevails )
But, you can't keep a good thing down, and online poker is slowly making its way back to America.