22 CFR 501.7 - Appointment as Chief of Mission.
(a) Appointment by President. Chiefs of mission are appointed by the President, by and with the advice and consent of the Senate. They may be career members of the Foreign Service or they may be appointed from outside the Service.
(b) Recommendation of Foreign Service career members. On the basis of recommendations made by the Director of Broadcasting Board of Governors, the Secretary of State from time to time furnishes the President with the names of Foreign Service career members qualified for appointment as chiefs of mission. The names of these officers, together with pertinent information concerning them, are given to the President to assist him in selecting qualified candidates for appointment as chiefs of mission.
(c) Status of Foreign Service career members appointed as Chiefs of Mission. Foreign Service career members who are appointed as chiefs of mission retain their career status as Foreign Service career members.