| Cabinet Departments | Independent Agencies | Independent Regulatory Commissions | Government Corporations | |
| Head | Cabinet Secretary | Administrator or Commission | Multimember Board or Commission | Boards or Commission |
| Appointment | Presidential with Senate approval | Presidential (some with Senate approval) | Presidential, bipartisan with Senate approval | Presidential (some with Senate approval) |
| Term of Office | President's discretion | Presidential discretion or specified | specific, staggered | President's discretion |
| Removal | President | President (or for cause only) | for cause only | President |
| Role | General administration | specialized programs | economic regulation | business enterprises |
| Functions | administrative, quasi-judicial; quasi-legislative | administrative (all); quasi-judicial (some); quasi-legislative (some) | administrative; quasi-judicial; quasi-legislative | administrative |