8 U.S.C. § 1324 (a)(1)(A)(iii) Any person who knowing or in reckless disregard of the fact that an alien has come to, entered, or remains in the United States in violation of law, conceals, harbors, or shields from detection, or attempts to conceal, harbor, or shield from detection, such alien in any place, including any building or any means of transportation; shall be punished as provided in subparagraph (B)
8 U.S.C. § 1324 (a)(1)(B)(ii) A person who violates subparagraph (A) shall, for each alien in respect to whom such a violation occurs be fined under title 18, imprisoned not more than 5 years, or both;
5 years per violation.
Do you think that those laws can be applied against the mayors of sanctuary cities? Is there any precedent for it.
No AG can immediately start enforcing every single immigration law that has not been enforced seriously for a few decades. And the cooperation of local law enforcement is necessary to effectively enforce the law, or maybe hire 100,000 or more new ICE agents.