Effective dates

(a) Effective date Except as provided in subsection (b), this Act shall take effect 180 days after the date of enactment of this Act. (b) Collective bargaining agreements In the case of an applicable collective bargaining agreement in effect on the effective date prescribed under subsection (a), the Act shall take effect on the earlier of— (1) the date of the termination of such agreement; (2) the date of any amendment, made on or after such effective date, to such agreement; or (3) the date that occurs 18 months after such effective date.