Actually the current GOP is a great example of what happens with Amnesty.
The marxists invaded the democrat party and we allowed and even encouraged the democrats to flee across the border to the GOP. Now those former democrats are feeling homesick for the old country but don’t have the stones to go back so they’re remaking the GOP in their own image. The GOP became balkanized and now a bloody civil war is brewing within it.
The sins of the Reagan amnesty have come home to roost. Millions more now in the Democratic camp.