"I haven't seen anyone seriously advocating mass roundups."
Mass roundups are NOT necessary! If their employers are sanctioned, they will get the hint. Most have too much invested in this country (cars, homes, etc) to see them lost due to unemployment. They will sell out and go back. Then return when they can do so legally.
This is not the final solution (that is 100% effective) but if we can reduce the presence to 10%, we are millions ahead.
What is the "final solution"?
"This is not the final solution (that is 100% effective) but if we can reduce the presence to 10%, we are millions ahead."
Sorry folks, I certainly intended no racism. I sould have said "best" solution or "most effective".