Yesterday, in United States v. City of New York, yet another federal court ruled against the Trump administration in a sanctuary city case. "Sanctuary" jurisdictions are state and local governments that restrict their law enforcement agencies and other employees from assisting federal immigration enforcement and deportation efforts in various ways. In this case, Judge Reyes of the US District Court for the Eastern District of New York upheld New York City laws restricting local law enforcement information-sharing and other assistance to federal immigration enforcers.
The court ruled that federal law does not preempt these policies, and that if if it did, there would be a violation of the anti-commandeering requirements of the Tenth Amendment:
