There are easy ways to do it.
Proof of legal presence required to wire money.
Every illegal caught from now on will be charged, jailed, and DNA tested and be permanently banned from citizenship.
Give em a month to self deport first.
I will say this there will be thousands of landscaping and construction jobs available. Hell, I might get a landscaping business going if it happens.
Actually easier that that. Trump has made it clear that “the really good ones” (i.e., most of them, probably) are welcome to apply to return quickly.
So...simply tell them that their re-admission paperwork will be handled in the order in which it is received. They’ll be jumping over each other to get home, if that is done. Trump has INCREDIBLE LEVERAGE, I’m just not sure he realizes the extent of it.