70 ILCS 1925/5-30

The Authority may incur debt and borrow money from time to time and, in evidence thereof, may issue and sell bonds in such amounts as the Authority may determine, to provide funds for carrying out the purposes of this Article and to pay all costs and expenses incident thereto, and to refund and refinance, from time to time, bonds so issued and sold, as often as may be deemed to be advantageous by the Authority.