70 ILCS 1842/900: Home rule.

(a) A participating municipality that is a home rule municipality may not regulate or act in a manner inconsistent with this Act as those regulations or acts apply to the Rock Island Regional Port District. This Act is a limitation under subsection (i) of Section 6 of Article VII of the Illinois Constitution on the concurrent exercise by home rule units of powers and functions exercised by the State.

(b) Nothing in this Section prohibits regulations or actions by a municipality that are otherwise lawful and not expressly prohibited by or in conflict with this Act.