Should the Native Americans of Columbus's day built a Wall to keep out Illegal White Hordes

If you've even been in the American West and on a Native Indian reservation you surely must realize it was the white man who screwed the Indians.  First he flooded into what was there country (sounds like illegal immigration).  And then to add insult to injury he pumped millions of dollars in the form of welfare into the reservations he had placed them on.  Making them absolutely dependence on the white man's benevolence in Washington D.C.  Does all this look familiar when you see today's America?  If not you are one of those uninformed ignorant Americans who will never learn from history because you don't know it.  And as the old saying goes, "those that don't learn from history are doomed to repeat it".
To bad the early Native Americans listened to the open borders leaders of that day.  They should have built the Wall!