Constitution of United States of America
Article II Section. 1.
Before he enter on the Execution of his Office, he shall take the following Oath or Affirmation:—"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States."
The President shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States; he may require the Opinion, in writing, of the principal Officer in each of the executive Departments, upon any Subject relating to the Duties of their respective Offices, and he shall have Power to grant Reprieves and Pardons for Offences against the United States, except in Cases of Impeachment.
Propaganda & indefinite detention
Smith-Mund Act of 1948The U.S. Information and Educational Exchange Act of 1948 (Public Law 80-402), popularly called the Smith–Mundt Act, specifies the terms in which the United States government can engage global audiences, also known as propaganda. The act was first introduced as the Bloom Bill in December 1945 in the 79th Congress and subsequently passed by the 80th Congress and signed into law by President Harry S. Truman on January 27, 1948.
H.R.1735 - National Defense Authorization Act for Fiscal Year 2016: https://www.congress.gov/bill/114th-congress/house-bill/1735/text