Strange that Texas, which wants a large population of people deported, would also be the first to choose to "open it's doors" and say "bring them all here"
They offer land freely in their backyard to build what essentially could turn into the equivalent of a slum or ghetto.
I can't imagin a neighbouring country accepting a large influx of people quickly or willingly. So Texas may find themselves "looking after" the people they send here for a long time.
I may be wrong on the process, but in Germany i believe it started with a community or neighbourhood being walled off. Think of a suburb or maybe a few large city blocks. People had to come and go through checkpoints and some were not allowed to leave.
After which these walled communities became slums or ghettos. Then the Nazis began to ship peoples from these walled communities out to Poland and neighbouring countries (that they invaded) into concentration camps.