(a) Limitation of powers.--

(1) The Commonwealth does hereby pledge to and agree with any person, firm or corporation, government agency, whether in this Commonwealth or elsewhere, or Federal agency subscribing to or acquiring the bonds to be issued by the authority that the Commonwealth will not limit or alter the rights hereby vested in the authority in any manner inconsistent with the obligations of the authority to the obligees of the authority until all bonds at any time issued, together with the interest thereon, are fully paid or provided for. The Commonwealth does further pledge to and agree with any Federal agency that, in the event that any Federal agency shall contribute any funds for the authority or any project, the Commonwealth will not alter or limit the rights and powers of the authority in any manner which would be inconsistent with the due performance of any agreements between the authority and any Federal agency.

(2) The Commonwealth does hereby pledge to and agree with any person who, as owner thereof, leases or subleases property to or from an authority that the Commonwealth will not limit or alter the rights and powers hereby vested in the authority or otherwise created by this chapter in any manner which impairs the obligations of the authority until all obligations of the authority under the lease or sublease are fully met and discharged.

(b) Tax proceeds.--If and to the extent that the authority pledges its share of the proceeds of a tax authorized by law to be levied for authority purposes or made available for use by the authority as security for the payment of bonds issued by the authority, the Commonwealth does hereby pledge to and agree with any person, firm or corporation, government agency, whether in this Commonwealth or elsewhere, or Federal agency subscribing to or acquiring such bonds to be issued by the authority that the Commonwealth itself will not, nor will it authorize any government entity levying such tax to, abolish or to reduce the rate of tax imposed for authority purposes or made available for use by the authority until all bonds so secured by the pledge of the authority, together with the interest thereon, are fully paid or provided for.