Executive powers
The president is head of the executive branch of the federal government and is constitutionally obligated to "take care that the laws be faithfully executed". The executive branch has over four million employees, including the military.
Administrative powers.
Presidents make numerous executive branch appointments: an incoming president may make up to 6,000 before taking office and 8,000 more while serving. Ambassadors, members of the Cabinet, and other federal officers, are all appointed by a president with the "advice and consent" of a majority of the Senate. When the Senate is in recess for at least ten days, the president may make recess appointments. Recess appointments are temporary and expire at the end of the next session of the Senate.
The power of a president to fire executive officials has long been a contentious political issue. Generally, a president may remove executive officials purely at will. However, Congress can curtail and constrain a president's authority to fire commissioners of independent regulatory agencies and certain inferior executive officers by statute.
To manage the growing federal bureaucracy, presidents have gradually surrounded themselves with many layers of staff, who were eventually organized into the Executive Office of the President of the United States. Within the Executive Office, the president's innermost layer of aides (and their assistants) are located in the White House Office.
The president also possesses the power to manage operations of the federal government through issuing various types of directives, such as presidential proclamation and executive orders. When the president is lawfully exercising one of the constitutionally conferred presidential responsibilities, the scope of this power is broad. Even so, these directives are subject to judicial review by U.S. federal courts, which can find them to be unconstitutional. Moreover, Congress can overturn an executive order through legislation (for example, Congressional Review Act).
