The state pledges and agrees with the holders of any bonds issued under this article that the state will not limit or alter the rights vested in the ports of Indiana to fulfill the terms of any agreements made with the holders or in any way impair the rights or remedies of the holders until the bonds, together with the interest, with interest on any unpaid installments of interest, and all costs and expenses in connection with any action or proceeding by or on behalf of the holders, are fully met and discharged. The ports of Indiana is authorized to include this pledge and agreement of the state in any agreement with the holders of the bonds.
IC 8-10-1-30