There are many places in the US that allow gambling off of Indian reservations. There is even a casino near downtown here in Philadelphia.
http://en.wikipedia.org/wiki/List_of_casinos_in_the_United_S...
http://en.wikipedia.org/wiki/List_of_casinos_in_the_United_S...
I learned a new term today, Racino, had never heard that before, Racetrack/Casino.
Only 12 in PA, that's still not too many.