For the operative date of this subchapter, referred to in subsec. (a), see section 509 of Pub. L. 91–173, set out as an Effective Date note under section 801 of this title.

Section operative 90 days after Dec. 30, 1969, except to the extent an earlier date is specifically provided for in Pub. L. 91–173, see section 509 of Pub. L. 91–173, set out as a note under section 801 of this title.