We need to deport or imprison ALL illegal aliens, including their anchor babies, seal/secure the border, and have an armed response to anyone who attempts to re-enter illegally.
Why deport/imprison? That costs money.
Simply declare them persona non grata. Or in other words, they no longer enjoy the protections of US law.
Then anyone could do anything to an illegal without fear of anything. Kill/rape/torture... fine, since they are now outside of US law protection.
I’d wager that after 1 week, the millions of illegals would quickly self-deport themselves back home.
Well, that... or die.