From Finding Dulcinea:

On paper, the situation sounds good: Based on a 1787 agreement between tribes and the United States government, the U.S. has an obligation to provide American Indians with free health care on reservations.

But that’s not how it works, reports the Associated Press. Roughly one-third more is spent per capita on health care for felons in federal prison, according to 2005 data referenced by the AP. The system’s ineffectiveness has yielded a common refrain on reservations of “don’t get sick after June,” because that‘s when federal funds run out.