I used to work for a tribe in which one faction was constantly trying to disenroll another, partly to get rid of its political opponents and partly to make the remaining members' per-capita checks bigger.

In some instances, the disenrolled people were tribal members who had lived on the reservation their whole lives. They lost their per-cap checks, their access to healthcare, even in some cases the right to advertise their artwork as genuine Native American art. It was really a sad situation.