Illinois Statutes Chapter 730. Corrections § 5/5-5.5-10. Certificate of relief from disabilities

(a) A certificate of relief from disabilities does not, however, in any way prevent any judicial proceeding, administrative, licensing, or other body, board, or authority from relying upon the conviction specified in the certificate as the basis for the exercise of its discretionary power to suspend, revoke, or refuse to issue or refuse to renew any license, permit, or other authority or privilege.

(b) A certificate of relief from disabilities shall not limit or prevent the introduction of evidence of a prior conviction for purposes of impeachment of a witness in a judicial or other proceeding where otherwise authorized by the applicable rules of evidence.