Delegation and assignment

Except as otherwise expressly prohibited by law or otherwise provided in this Act, the Secretary of the Interior may delegate any of the functions so transferred to such officers and employees of the Department of the Interior as the Secretary may designate, and may authorize successive redelegations of such functions as may be necessary or appropriate. No delegation of functions under this section or under any other provision of this Act shall relieve the Secretary of the Interior of responsibility for the administration of the function.