25 ILCS 170/11.2: Preemption.

Other than a municipality with a population over 500,000, no unit of local government, including a home rule unit, may regulate lobbying in a manner inconsistent with this Act, and all existing laws and ordinances that are inconsistent with this Act are hereby superseded. This Section is a limitation of home rule powers under subsections (h) and (i) of Section 6 of Article VII of the Illinois Constitution.