Jack Goldsmith, a law professor at Harvard, on new theory of Constitution:

(a) the Constitution vests all of the executive power in the president, (b) all subordinate executive branch officials are removable at will by the president, (c) the president’s Article II duty to “take care that the laws be faithfully executed” entails an exclusive presidential power to decide which laws to enforce or not to enforce and (d) the president can thus direct and control all subordinate executive officials.