65 ILCS 95/20
In compliance with Section 7 of "An Act to revise the law in relation to the construction of the statutes", approved March 5, 1874, as amended, it is declared to be the law of this State, pursuant to paragraph (h) of Section 6 of Article VII of the Illinois Constitution, that the authority or duty to establish or prohibit the establishment of home equity programs in any municipality with more than 1,000,000 inhabitants, including home rule units, and the determination of the terms of such programs are declared to be exclusive powers and functions of the State which may not be exercised concurrently by any such municipality. No municipality with more than 1,000,000 inhabitants, including home rule units, shall establish or maintain a home equity program other than as provided in this Act, and any such municipality shall affirmatively establish and maintain a home equity program when required to do so pursuant to this Act.
65 ILCS 95/20