Section 16. The President shall nominate and, with the consent of the Commission on Appointments, appoint the heads of the executive departments, ambassadors, other public ministers and consuls, or officers of the armed forces from the rank of colonel or naval captain, and other officers whose appointments are vested in him in this Constitution. He shall also appoint all other officers of the Government whose appointments are not otherwise provided for by law, and those whom he may be authorized by law to appoint. The Congress may, by law, vest the appointment of other officers lower in rank in the President alone, in the courts, or in the heads of departments, agencies, commissions, or boards.