The War Powers Act is a fabulous bit of legislation, but why the hell people have such trouble understanding what is VERY clearly written is beyond me. I can sort of understand the mistaking of the UN Participation Act: it's worded a bit confusingly.
Here for the barfteenth time is how the War Powers Act puts it:
Section 2(c) The constitutional powers of the President as Commander-in-Chief to introduce United States Armed Forces into hostilities, or into situations where imminent involvement in hostilities is clearly indicated by the circumstances, are exercised only pursuant 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.The word "imminent" ONLY appears in the definition of "war", not in the instances in which he may go it alone. The word "imminent"
further restricts the President's actions, not broadens it. What is being done here is deliberately defining what constitutes "war", and Congress uses the word "imminent" to pull the laces of the strait-jacket even tighter: it's not just considered war if he/she introduces "armed forces" into "hostilities"; they're defining it to be war if those forces are merely put into a hot zone where hostilities look very likely.
To reiterate, the President may ONLY go it alone IF WE'RE ATTACKED. So Mr. Constitutional Scholar had it wrong even then. Let's not quibble about constitutionality either: by citing the "necessary and proper" clause of the Constitution as justification for the Statute, Congress asserts that this is the governing law for utilizing the ENUMERATED POWER that is in the Constitution. Disobeying this law is an act of unconstitutional behavior.
Part of the problem here is that Presidents have chipped away at the edges and sleazed by with mealy-mouthed justifications that have effectively lowered the understanding and acceptance of the terms of the law. That tilled the field for this ugly, flagrant, high-handed act of illegality.
This what you get when incorrect things are allowed to be repeated without getting corrected. It's simply not true, no matter how many supposedly "above reproach" people think and/or say it is.
The Treaty obligation with the UN Charter is NOT self-authorizing, as the Charter and the UN Participation Act make repeatedly obvious, so there's no "out" there, either.
Here's the full text of the War Powers Act.
http://www.policyalmanac.org/world/archive/war_powers_resolution.shtml