United States Code Title 42 — The Public Health and Welfare § 291n. Repealed. Pub. L. 90–174, § 3(b)(1), Dec. 5, 1967, 81 Stat. 535 § 291n. Repealed. Pub. L. 90–174, § 3(b)(1), Dec. 5, 1967, 81 Stat. 535