Pub. L. 90–234, § 2(b)(2), Dec. 30, 1967, 81 Stat. 752, provided that: “The amendments made by the first section of this Act, insofar as such amendments relate to items 725.24 and 726.70 of the Tariff Schedules of the United States, shall not affect the authority of the President contained in section 201(a)(2) of the Trade Expansion Act of 1962 [subsec. (a)(2) of this section].”

Duty-free treatment pursuant to this chapter of dicyandiamide in item 425.40 and limestone when imported for use in manufacture of cement in item 513.34 of the Tariff Schedules of the United States, by provision for non-application of subsec. (b)(1) of this section, see section 1823 of this title.