Section, Pub. L. 100–478, title II, § 2304, Oct. 7, 1988, 102 Stat. 2322, directed Secretary to determine within 3 months after the 8th Conference of the Parties to CITES whether the importation of illegally harvested ivory into the United States had been substantially stopped, and upon a determination that it had not been substantially stopped, to recommend to Congress necessary legislation or other actions to achieve the purposes of this chapter.