20 ILCS 3805/28

The venue of any action or proceeding brought by the trustees under Sections 25, 26 and 27, shall be in Sangamon County. Before declaring the principal of notes or bonds (other than bonds to which Section 26.1 of this Act shall not apply or notes issued in anticipation of the issuance of bonds to which Section 26.1 of this Act shall not apply) due and payable, the trustee shall first give 30 days' notice in writing to the Governor, to the Authority, and to the State Treasurer.