5 ILCS 805/5
Recognizing that State law does not currently grant State or local law enforcement the authority to enforce federal civil immigration laws, it is the intent of the General Assembly that nothing in this Act shall be construed to authorize any law enforcement agency or law enforcement official to enforce federal civil immigration law. The changes made to the definitions of immigration detainer and civil immigration warrant (formerly "non-judicial immigration warrant") by Section 10 of this amendatory Act of the 102nd General Assembly are declarative of existing law. This Act shall not be construed to prohibit or restrict any entity from sending to, or receiving from, the United States Department of Homeland Security or other federal, State, or local government entity information regarding the citizenship or immigration status of any individual under Sections 1373 and 1644 of Title 8 of the United States Code. Further, nothing in this Act shall prevent a law enforcement officer from contacting another law enforcement agency for the purposes of clarifying or confirming the civil or criminal nature of notifications or other records provided by the National Crime Information Center or the Law Enforcement Agencies Data Administrative System .
5 ILCS 805/5