Allow the President to invade a neighboring nation, whenever he shall deem it necessary to repel an invasion, and you allow him to do so, whenever he may choose to say he deems it necessary for such purpose — and you allow him to make war at pleasure. Study to see if you can fix any limit to his power in this respect, after you have given him so much as you propose. If, today, he should choose to say he thinks it necessary to invade Canada, to prevent the British from invading us, how could you stop him? You may say to him, 'I see no probability of the British invading us' but he will say to you 'be silent; I see it, if you don’t.' The provision of the Constitution giving the war-making power to Congress, was dictated, as I understand it, by the following reasons: Kings had always been involving and impoverishing their people in wars, pretending generally, if not always, that the good of the people was the object. This, our Convention understood to be the most oppressive of all Kingly oppressions; and they resolved to so frame the Constitution that no one man should hold the power of bringing this oppression upon us.'
Congress affirms that–
(1) the United States is engaged in an armed conflict with al-Qaeda, the Taliban, and associated forces and that those entities continue to pose a threat to the United States and its citizens, both domestically and abroad; (2) the President has the authority to use all necessary and appropriate force during the current armed conflict with al-Qaeda, the Taliban, and associated forces pursuant to the Authorization for Use of Military Force (Public Law 107-40; 50 U.S.C. 1541 note); (3) the current armed conflict includes nations, organization, and persons who– (A) are part of, or are substantially supporting, al-Qaeda, the Taliban, or associated forces that are engaged in hostilities against the United States or its coalition partners; or (B) have engaged in hostilities or have directly supported hostilities in aid of a nation, organization, or person described in subparagraph (A); and (4) the President’s authority pursuant to the Authorization for Use of Military Force (Public Law 107-40; 50 U.S.C. 1541 note) includes the authority to detain belligerents, including persons described in paragraph (3), until the termination of hostilities.