The point is, they haven't even lived in the same place in the Americas for a particularly long time. The most valuable tales of the oral tradition (which is, for the most part, all they've got) are the ones describing how they came into an area whuppin' ass of whomever preceded them.
Those are obviously not the ones who claim to have “always been here” then? Which was the concept you put forth and I was responding to. Did I misunderstand what you first stated? Because this is a whole different ball of wax here...