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 federal appointments. An incoming president may make up to 6,000 upon taking office and 8,000 more while serving. Ambassadors, members of the Cabinet, and other 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 by 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 via legislation (e.g., Congressional Review Act). Foreign affairs Article II, Section 3, Clause 4 requires the president to "receive Ambassadors." This clause, known as the Reception Clause, has been interpreted to imply that the president possesses broad power over matters of foreign policy, and to provide support for the president's exclusive authority to grant recognition to a foreign government. The Constitution also empowers the president to appoint United States ambassadors, and to propose and chiefly negotiate agreements between the United States and other countries. Such agreements, upon receiving the advice and consent of the U.S. Senate (by a two-thirds majority vote), become binding with the force of federal law. While foreign affairs has always been a significant element of presidential