https://www.gpo.gov/fdsys/pkg/USCODE-2001-title8/html/USCODE-2001-title8-chap12.htm
CHAPTER 12—IMMIGRATION AND NATIONALITY
SUBCHAPTER I—GENERAL PROVISIONS
§1373. Communication between government agencies and the Immigration and Naturalization Service
(a) In general
Notwithstanding any other provision of Federal, State, or local law, a Federal, State, or local government entity or official may not prohibit, or in any way restrict, any government entity or official from sending to, or receiving from, the Immigration and Naturalization Service information regarding the citizenship or immigration status, lawful or unlawful, of any individual.
(b) Additional authority of government entities
Notwithstanding any other provision of Federal, State, or local law, no person or agency may prohibit, or in any way restrict, a Federal, State, or local government entity from doing any of the following with respect to information regarding the immigration status, lawful or unlawful, of any individual:
(1) Sending such information to, or requesting or receiving such information from, the Immigration and Naturalization Service.
(2) Maintaining such information.
(3) Exchanging such information with any other Federal, State, or local government entity.
Wow, they can get the death penalty or life in prison. Look at (B)(iv).
https://www.gpo.gov/fdsys/pkg/USCODE-2001-title8/html/USCODE-2001-title8-chap12.htm
§1324. Bringing in and harboring certain aliens
(a) Criminal penalties
(1)(A) Any person who—
…
(iii) 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).
(B) A person who violates subparagraph (A) shall, for each alien in respect to whom such a violation occurs—
(i) in the case of a violation of subparagraph (A)(i) or (v)(I) or in the case of a violation of subparagraph (A)(ii), (iii), or (iv) in which the offense was done for the purpose of commercial advantage or private financial gain, be fined under title 18, imprisoned not more than 10 years, or both;
(ii) in the case of a violation of subparagraph (A)(ii), (iii), (iv), or (v)(II), be fined under title 18, imprisoned not more than 5 years, or both;
(iii) in the case of a violation of subparagraph (A)(i), (ii), (iii), (iv), or (v) during and in relation to which the person causes serious bodily injury (as defined in section 1365 of title 18) to, or places in jeopardy the life of, any person, be fined under title 18, imprisoned not more than 20 years, or both; and
(iv) in the case of a violation of subparagraph (A)(i), (ii), (iii), (iv), or (v) resulting in the death of any person, be punished by death or imprisoned for any term of years or for life, fined under title 18, or both.