From The Washington Post:
Indian gambling pulled in $18.5 billion in 2004, nearly double the take for Nevada’s gambling industry, as tribal casinos boomed ahead.
The 10 percent increase extended more than a decade of double-digit growth for the nation’s Indian casinos, which have mushroomed since Congress passed a law creating the legal framework in 1988.
There now are 411 Indian casinos in the United States, operated by 223 tribes in 28 states. More than half the 341 federally recognized Indian tribes in the continental United States operate casinos.
Here in sunny Arizona, there were efforts a few years ago by state lawmakers to tax the tribal casinos. With stories like this, it will be interesting to see if such efforts increase.