In sum, the Commander in Chief Clause gives the President the exclusive power to command the military in operations approved by Congress; it probably gives the President substantial independent power to direct military operations so long has the President does not infringe exclusive powers of Congress or other provisions of the Constitution; and it may (but may not) limit Congress’ power to pass statutes directing or...

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...

Make treaties with other nations (pending approval of the Senate) Veto or sign bills passed by Congress Represent the U.S. in conversations with foreign countries and their leaders Enforce laws Congress passes