And so we should build huge walls and proclaim ourselves free free free from any interdependence among the rest of the world. We shall never travel abroad nor allow anyone to enter our mighty realm! We will just send soldiers out to take whatever we need.
That aint resource management. people are resources too.
Unless you are a Native American you are related to immigrants.
Probably legal and illegal. Try to work your way through that. A border is nought but a line in the sand if there is water on one side but not the other then people will cross it. Or die trying.