70 ILCS 215/9

Under no circumstances shall any bonds issued by the Authority pursuant to this Act be or become an indebtedness or obligation of the State of Illinois or of any other political subdivision of or municipality within the State, nor shall any such bond be or become an indebtedness of the Authority within the purview of any constitutional limitation or provision, and it shall be plainly stated on the face of each bond that it does not constitute such an indebtedness or obligation but is payable solely from the revenues or income as aforesaid.