Our further inquiries concerning this part of the powers and functions of the chief magistrate will only need to extend so far as to ascertain what is the "executive power," which the Constitution declares shall be "vested" in the President. In the resolutions, which at different stages had previously passed in the Convention, this had been described as a "power to carry into execution the national laws"; and this description was regarded as including such other powers, not legislative or judicial in their nature, as might from time to time be delegated to the President by Congress.[340] The committee of detail, in drafting the Constitution, employed the phrase "executive power" to describe what had thus been designated by the resolutions sent to them; and as the plan of government which they presented proposed to make the declaration of a state of war a legislative act, the prosecution of a war, when declared, was left to fall within the executive duties as part of the "executive power." In order, moreover, that the executive duties might be still more clearly defined, the committee provided that the President "shall take care that the laws be faithfully executed," and imposed upon him the same obligation by the force of his oath of office. The committee having been directed to provide for the end in view, it was considered that they were also to provide the means by which the end was to be obtained.[341] Accordingly, they made the President commander-in-chief of the army and navy, and of the militia of the States when called into the service of the United States. The President appears, therefore, to have been placed in the same position with reference to the means to be employed in the discharge of all his executive duties, when force may in his judgment be necessary. The declaration of a state of war is an enactment by the legislative branch of the government; the creation of laws is a function that belongs exclusively to the same department;--but when a law exists, or the state of war exists, it is for the President, by virtue of his executive office, and of his position as commander-in-chief, to employ the army and navy, and the militia actually called into the service of the United States, in the execution of the law, or the prosecution of hostilities, in such a manner as he may think proper.[342]