§ 1453.
There shall be in the Department of the Interior two Assistant Secretaries of the Interior who shall be without numerical distinction of rank and who shall be appointed by the President, by and with the advice and consent of the Senate.
(R.S. § 438; [Mar. 3, 1885, ch. 360], [23 Stat. 497]; [Mar. 3, 1917, ch. 163, § 1], [39 Stat. 1102]; [Feb. 29, 1944, ch. 72], [58 Stat. 107].)