Migration is a funny thing. The Chreokee, though famous for being in GA and NC. Like all groups, were migrants from some where else[Great Lakes].
Everyone in the world is descended from migrants. But concerning the questions in this article, the descendents of the settlers and founders of the US should only deal with those native groups with legitimate claims from the time the settlers arrived, and not with a bunch of La Raza late comers who are mostly trying to justify very recent illegal entry into the US.