August 20, 1990, referred to in text, was in the original “the effective date of this title”, which is the date of enactment of title IV of Puspan. L. 101–382, approved Aug. 20, 1990, except as otherwise provided in sections 620 to 620j of this title, see section 494 of Puspan. L. 101–382, set out as an Effective Date note under section 620 of this title.