30 ILCS 517/25: Penalties.

If a contractor is awarded a contract through the use of a preference under this Act and knowingly supplies procured products under that contract that are not manufactured in Illinois or the United States, as applicable, then (i) the contractor is barred from obtaining any State contract for a period of 5 years after the violation is discovered by the purchasing agency, (ii) the purchasing agency may void the contract, and (iii) the purchasing agency may recover damages in a civil action in an amount 3 times the value of the preference.