The Constitution vests all executive power in the President and charges him with faithfully executing the laws. Since it would be impossible for the President to single-handedly perform all the executive business of the Federal Government, the Constitution also provides for subordinate officers to assist the President in his executive duties. In the exercise of their often-considerable authority, these executive branch officials remain subject to the President’s ongoing supervision and control. The President in turn is regularly elected by and accountable to the American people. This is one of the structural safeguards, along with the separation of powers between the executive and legislative branches, regular elections for the Congress, and an independent judiciary whose judges are appointed by the President by and with the advice and consent of the Senate, by which the Framers created a Government accountable to the American people.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/government/united-states/executive-orders/paragraphs/1-0.md