; or (ii) section 502 of such Act (1–605.02, D.C. Official Code), establishing the power of the Board; (B) to preempt the laws described in subparagraph (A); or (C) to limit or alter the powers of the government of the District of Columbia pursuant to the District of Columbia Home Rule Act. (3) Actions of the authority Nothing in this Act or the regulations promulgated under this Act shall be construed to preempt— (A) the laws or ordinances of any State or political subdivision of a State, if such laws or ordinances provide collective bargaining rights for public employees that are comparable to or greater than the rights enumerated in section 4(b); (B) the laws or ordinances of any State or political subdivision of a State that substantially provide for the rights and responsibilities described in section 4(b) with respect to certain categories of public employees solely because such rights and responsibilities have not been extended to other categories of public employees covered by this Act; (C) the laws or ordinances of any State or political subdivision of a State that substantially 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 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