42 U.S.C. § 3501
Establishment of Department; effective date
The provisions of Reorganization Plan Numbered 1 of 1953, submitted to the Congress on March 12, 1953 , shall take effect ten days after April 1, 1953 , and its approval by the President, notwithstanding the provisions of the Reorganization Act of 1949, as amended, except that section 9 of such Act shall apply to such reorganization plan and to the reorganization made thereby.
( Apr. 1, 1953, ch. 14 , 67 Stat. 18 .)