305 ILCS 5/12-4.7b
The Department shall enter into intergovernmental agreements to conduct exchanges of information with the Illinois Department of Corrections, the Cook County Department of Corrections, and the office of the sheriff to the extent available to determine whether any individual included in an assistance unit receiving public aid under any Article of this Code is an inmate in a facility operated by the Illinois Department of Corrections, the Cook County Department of Corrections, or a county sheriff. Alternatively, the Department may utilize the option of purchasing incarceration data through a third-party resource in order to conduct data matches of incarcerated individuals. The Illinois Department of Corrections, the Cook County Department of Corrections, and the office of the sheriff of every other county shall honor all intergovernmental agreements with the Department under this Section and shall provide all required information in a timely manner. The Department shall review each individual prior to authorizing benefits at application and redetermination to verify eligibility for benefits under this Code . The Department shall terminate benefits under this Code for any individual determined to be ineligible by this review. The Department shall use any legal means available to recoup as an overpayment any assistance provided to an individual for any period during which he or she was ineligible to receive the assistance.
305 ILCS 5/12-4.7b