Just do it!
What you said....don’t warn them, do it.
“Just do it!”
Some previous Court rulings favorable to Illegals are partially rooted in the fact that the Feds showed no clear intent of cleaning up illegal immigration. As such, states and municipalities shall allow access to schools, social services, etc to Illegals.
Since the federal dollars that are certain to be withheld often fund those social programs, voicing intent to enforce the law is an important message to those parties who might have missed -or would like to disregard- the election results. There is a new Sherif in town, and the law will be enforced.