; or (C) the laws or ordinances of any State or political subdivision of a State that provide for the rights and responsibilities described in section 4(b), solely because such laws or ordinances provide that a contract or memorandum of understanding between a public safety employer and a labor organization must be presented to a legislative body as part of the process for approving such contract or memorandum of understanding. (3) Limited enforcement power In the case of a law described in paragraph (2)(B), the Authority shall only exercise the powers provided in section 5 with respect to those categories of public safety officers who have not been afforded the rights and responsibilities described in section 4(b). (4) Exclusive enforcement provision Notwithstanding any other provision of this Act, and in the absence of a waiver of a State’s sovereign immunity, the Authority shall have the exclusive power to enforce the provisions of this Act with respect to employees of a State. 9. Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out the provisions of this Act.