But the status quo is number 1 above, every time there's a new president, whether they have an R or D after their name.
There's never previously been a significant wall, and the penalties have had loopholes. Those can be closed. Heck, add a private right of action for any citizen as a means of enforcement. That would let not just the feds, but any aggrieved businessperson bring a case. You wouldn't have to rely on federal enforcement in that case.
Anyway, your argument essentially boils down to no deal being acceptible because it always can be changed by politicians. If under the current system we're not kicking them out, how will amnesty make it any worse?