...Defund them and prosecute....
The Feds cannot force states to enforce Federal law. No more than the Feds can force states to enforce anti gun Federal laws. But, states can enforce Federal laws voluntarily.
The big hammer here is to deny sanctuary cities all Federal funds. That would hit them where it really hurts. However, on a funding cutoff, the Liberals would whine, “What about the children?”
Shutting off their EBT cards, Section 8, ADC and other freebies will be a good start. Stop putting out saucers of milk and the cats head home. And it will deter others yearning to live free.
Those who remain may have to be removed `seat of the pants.’ If they’re caught again—prison. No more `boomerangs’ or catch-and-release!
We’ve been waiting for someone to enforce our immigration laws for a quarter century. Go Trump, go Sessions!
If the local police actually interfere with ICE collecting illegals, then they will be charged with obstructing justice. They won’t do that. All they are doing now is failing to notify ICE that they are about to release an illegal they have arrested for some other charge.
What if ICE agents simply park themselves in cities near police stations and pick them up as they are being released ? I think it is routine for police to check anyone arrested against federal databases to make sure they are not wanted for other serious crimes. That database check should tickle the local ICE agents to make a pickup rather than waiting until the police call ICE (which sanctuary cities are not doing). Whatever federal systems the police check just need some additional code to check names and addresses of the felon against IRS and SS databases to determine whether they are illegals or not — no entry in SS database or employment record but far away or name-SS# mismatch, and bingo, ICE has cause to pick the person up and talk to them.
Another idea might be for the FBI to create an entry in the file of every illegal ever brought in for any crime. So their is a detainer order already in place and local police cannot claim they didn’t have an ICE order to hold them.