Presidential War Powers只在3种情况下可以用:

1.已经宣战的
2.有过特别授权的,比如: UN授权的
3.在美国受到攻击时


“The War Powers Resolution of 1973 gives the president the power to commit troops anywhere he likes for 90 days.”

The War Powers Resolution is incoherent. Section 2(c) provides that the president’s power to initiate military action is limited to “(1) a declaration of war, (2) specific statutory authorization, or (3) a national emergency created by attack upon the United States, its territories or possessions, or its armed forces.” But at the same time, it authorizes the president to introduce military force for up to 90 days for any reason at all, which is obviously unconstitutional. I’ve written on this elsewhere.