'The conversation is always, 'Why don't you do like Vegas?'' said Sheila Morago, executive director of the Oklahoma Indian Gaming Association. While adding sports books isn't expected to boost that number significantly, tribes say it's another source to deliver services to tribal members. Tribal casinos generate more than $31 billion a year in gross revenue. Supreme Court cleared the way for states to legalize it. (AP) - American Indian tribes are welcoming an opportunity to offer sports betting in potentially hundreds of casinos across the country after the U.S.
