; and (2) is in effect on the day before the date of enactment of this Act. 7. Exceptions (a) In general The Authority shall not make a determination under section 3(a) that the laws of a State do not substantially provide for the rights and procedures under section 3(b) on the basis that relevant laws in the State— (1) permit a public employee or supervisory employee to appear on the employee's own behalf with respect to the relationship of the public employee or supervisory employee with the public employer involved; (2) do not cover public employees or supervisory employees of the State militia or national guard; or (3) do not apply to a political subdivision of a State if— (A) such political subdivision has a population of fewer than 5,000 people or employs fewer than 25 public employees; and (B) the State in which such political subdivision is located notifies the Authority that such subdivision is exempt from such laws before the date on which the Authority makes the determination. (b) Compliance (1) Actions of States Nothing in this Act shall be construed to require a State to rescind or preempt the laws of any political subdivision of the State if such laws substantially provide for the rights and procedures described in section 3(b). (2) Actions of the District of Columbia Nothing in this Act or in the rules issued under this Act shall be construed— (A) to require the District of Columbia to rescind— (i) section 501 of the District of Columbia Government Comprehensive Merit Personnel Act of 1978 (1–605.01, D.C. Official Code), establishing the Public Employee Relations Board of the District of Columbia; 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 ( Public Law 93–198