I still don’t know what law you’re talking about. Most of the people crossing the border are requesting asylum and doing so in compliance with the law

Most of the people crossing the border are requesting asylum and doing so in compliance with the law

That is not the problem for the states or cities, that is the problem for the federal government. It is a federal policy, not a state, or city policy, so why are cities and states the de facto customs & border agency? Because the federal government fails in the duties it has given itself. You defeat your own argument.