just as you are an invader to a native American and should be caged
Science tells us that we (meaning humans) did not originate in the North American continent, so I'm not sure what you are calling "native" Americans. Do you mean the American Indian, who came here from Siberia?
Assuming you do mean the American Indian, realize that the reason they were overtaken and no longer have control of the North American continent or the culture therein is because they had an open-borders immigration policy where they let in pretty much anybody - especially those who were claiming asylum from religious persecution from their homeland.
Now, as a US citizen, I am not interested in losing control of the majority of the North American continent and its culture to Central and South Americans, or Asians, or Europeans, or Africans, or anyone else. I cannot for the life of me understand why anyone would root for such an outcome. Are YOU seeking such an outcome? I would think that if you simply looked at your own (assumed) example, you would see just how completely idiotic such a scenario would be as a governmental policy.