Also, since you say that it's the duty to ask the President to request the Congress to declare war before he takes any action, could you please point out to me where, in the Constitution, it states that that is one of the duties of the Executive Branch? Can you please designate the section which requires such action?
You must have a newer edition of the Constitution if yours says that the President is obligated to request a declaration of war before taking military action. All I can find is that it designates him as the Commander-in-Chief.