Enforce the law. Secure the borders. No jobs, no welfare, no prospects, etc, most of them will go home. Other would be illegals will stay home.
I agree, Jim, that we could get rid of a great deal of the problem. But there seems to be no desire by the RATS and little desire by the GOP to do so. My old pal George Putnam, God rest his soul, was all over this issue three decades ago. If he were alive, he would not believe what is happening to the country.