My expected grandchild is 1/2 Native American, and the father of the child is not on government benefits. He only has a part time job, though...but does a lot of odd jobs for cash and works for his mother. His mother owns several houses (off the reservation) and rents most of them. Their only dependence is healthcare, because "Why pay for it if you can get it free?" (which I must admit makes sense, though I don't want my daughter to travel 90 minutes to the clinic/hospital, so she is on my health insurance.)
The reservations farther north obviously didn't work as well as the ones around Oklahoma...i don't know why.