Columbia subject headings:
Government executives--Selection and appointment--United States.
Presidents--United States--Staff.
United States--Officials and employees--Selection and appointment.
Harvard subject headings:
Government executives--Selection and appointment--United States.
Presidents--United States--Staff
United States--Officials and employees--Selection and appointment.
Princeton subject headings:
Government executives--United States--Appointment, qualifications, tenure, etc.
Presidents--United States--Staff.
United States--Officials and employees--Selection and appointment.