Section, acts Apr. 19, 1950, ch. 92, 9, 64 Stat. 47; Oct. 30, 1972, Pub. L. 92–603, title III, § 303(c), 86 Stat. 1484; Dec. 31, 1973, Pub. L. 93–233, § 19(a), 87 Stat. 974, related to additional Social Security contributions to States for State expenditures for aid to dependent children to Navajo and Hopi Indians.