(a) The Commonwealth does hereby pledge to and agree with any person, the county, county seat, political subdivision or Federal agency subscribing to or acquiring the bonds to be issued by the authority for the construction or improvement of a convention center, or parts thereof, that the Commonwealth will not limit or alter the rights hereby vested in the authority in any manner inconsistent with the obligations to the bondholders until all bonds at any time issued, together with the interest, are fully paid and discharged. The Commonwealth does further pledge to and agree with any Federal agency that in the event that the Federal agency shall construct or contribute funds for the construction or improvement of a convention center, or parts thereof, that 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 the Federal agency.

(b) The Commonwealth does hereby pledge to and agree with any person who as owner leases or subleases a convention center, or parts thereof, to or from an authority created pursuant to this subdivision that the Commonwealth will not limit or alter the rights and powers hereby vested in the authority or otherwise created by this subdivision 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.