Another thing that could be done besides withholding the subsidies and benefits - impose fines for being here illegally and then seize assets when necessary to collect the fines. Eventually, it would be in tbrir best interest to leave. There are ways to make them return home peacefully if we are serious about it.
Really that’s just charging them a modicum of rent, while they will still be taking in government-subsidy resources far beyond their ability to pay for them.
We need e-verify, a hard cut off of any government services, and quick and certain deportation.
One of the platform’s of Trump’s immigration plan when he was running, was that no legal immigrations, what to speak of illegals, should get any gov bennies at all.
Hopefully that will be implemented soon. Of course since President Trump is not a dictator, Congress needs to do its part!