My proposal to dealing with the problem was laid out in the post you replied to, but I'll post it again:
Cut illegals off from all welfare and social programs.
One year minimum in federal prison for anyone employing an illegal.
Give the SEEBEES the job of physically securing the border and tell them that we know it can't be done.
Deport any illegal caught violating any law no matter how small.
Cut off all federal funds to any state that allows any sanctuary for illegals.
That ought to clear things up.
Retroactive 25 years? Applicable to people who otherwise contribute in good ways to our economy? Good luck with that one. Are you ready to pay taxes for twice as many prisons and guards as we have today? Good luck with that one, too.