N.J. Stat. § 5:12-173.3a
The State of New Jersey hereby covenants with the purchasers, holders and owners, from time to time, of any bonds secured by funds derived from fees imposed for the use of casino parking spaces pursuant to section 3 of P.L. 1993, c.159 (C.5:12-173.3) that it shall not repeal or reduce the fee so imposed under that act, while bonds entitled to benefits from the fee so imposed are outstanding, and shall not modify or amend the provisions of that act so as to create any lien or charge on, or any pledge, assignment, diversion, withholding payment or other use of or deduction from the fee so imposed which is prior in time or superior in right to any payments required to be made pursuant to any bond covenants entered into with the purchasers, holders and owners of the bonds so secured.
N.J.S. § 5:12-173.3a