15 ILCS 405/10.05a
At the direction of the Department of Healthcare and Family Services , the Comptroller shall deduct from a warrant or other payment described in Section 10.05 of this Act, in accordance with the procedures provided therein, and pay over to the Department or the State Disbursement Unit established under Section 10-26 of the Illinois Public Aid Code, at the direction of the Department, that amount certified as necessary to satisfy, in whole or in part, past due support owed by a person on account of support action being taken by the Department under Article X of the Illinois Public Aid Code, whether or not such support is owed to the State. Such deduction shall have priority over any garnishment except that for payment of state or federal taxes. In the case of joint payees, the Comptroller shall deduct and pay over to the Department or the State Disbursement Unit, as directed by the Department, the entire amount certified. The Comptroller shall provide the Department with the address to which the warrant or other payment was to be mailed and the social security number of each person from whom a deduction is made pursuant to this Section.
15 ILCS 405/10.05a