25 U.S.C. § 640
Section, act Apr. 19, 1950, ch. 92, § 10, 64 Stat. 47, established Joint Committee on Navajo-Hopi Indian Administration, with function of making a continuous study of programs for administration and rehabilitation of Navajo and Hopi Indians.
Pub. L. 93–531, § 26, , 88 Stat. 1723, provided that the repeal is effective as of the close of business .