He is 100% right. In the constitution it states only Congress has the ability to declare war. G.W. Bush found a work around to that but it certainly doesn't give Trump unilateral control of the military
Originally Posted by Chaz55
Article II Section 2 of the U.S. Constitution, the Commander in Chief clause, states that "[t]he 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."
The questions of whether and to what extent the President has the authority to use the military absent a Congressional declaration of war have proven to be sources of conflict and debate throughout American history. Some scholars believe the Commander in Chief Clause confers expansive powers on the President, but others argue that even if that is the case, the Constitution does not define precisely the extent of those powers. These scholars tend to construe the Clause narrowly, asserting that the Founders gave the President the title to preserve civilian supremacy over the military, not to provide additional powers outside of a Congressional authorization or declaration of war.
War Powers Resolution
After the Kennedy, Johnson, and Nixon Administrations spent nearly a decade committing U.S. troops to Southeast Asia without Congressional approval, in 1973 Congress responded by passing the War Powers Resolution. The Resolution sought to halt the erosion of Congress's ability to participate in war-making decisions, an aim furthered by the Resolution's requirement that the President communicate to Congress the commitment of troops within 48 hours. Further, the statute requires the President to remove all troops after 60 days if Congress has not granted an extension.
Presidents have typically considered the War Powers Resolution to be unconstitutional, and so they have tended not to follow it. This unwillingness has never been challenged by another actor (congress, civilians, etc), so the Supreme Court has never up the issue. In one way, the resolution takes an unprecedented action by allowing the President to unilaterally put American troops into conflict. Although the act imposes a check on the President (by imposing a limit for the amount of time the troops can be deployed without Congressional consent), the act has not appeared to pose any practical checks on Presidential actions.
And even though the War Powers Act exists, Congress is still largely deferential toward the President with regard to military authorization. For example in 1995, regarding the sending of US troops into Bosnia, Bob Dole (the Republican Senate Majority Leader) said that President Clinton (a Democrat) had “the authority and the power under the Constitution to do what he feels should be done regardless of what Congress does.”