The Executive Branch is comprised of the offices of the President, the Vice President, and those Agencies and Bureaus (such as the CIA) under the direction of the President.
The Declaration of Independence, the Constitution, and the Bill of Rights.
"These three documents, known collectively as the Charters of Freedom, have secured the rights of the American people for more than two and a quarter centuries and are considered instrumental to the founding and philosophy of the United States. "