A prior section 7, acts Sept. 21, 1922, ch. 369, § 5, 42 Stat. 1000; June 15, 1936, ch. 545, §§ 2, 6, 49 Stat. 1491, 1497; Pub. L. 90–258, §§ 10, 11, Feb. 19, 1968, 82 Stat. 29; Pub. L. 93–463, title I, § 103(a), (f), (g), title II, § 207, Oct. 23, 1974, 88 Stat. 1392, 1400; Pub. L. 102–546, title II, §§ 201(c), 209 (b)(2), Oct. 28, 1992, 106 Stat. 3597, 3606, related to conditions and requirements for designation of boards of trade as contract markets, prior to repeal by Pub. L. 106–554, § 1(a)(5) [title I, § 110(2)], Dec. 21, 2000, 114 Stat. 2763, 2763A–384.