Dwight, that is correct. Congress alone can declare war. The President directs war in the form of protecting our country from attack in general terms. Preemptive and intervention were seriously warned against by Jefferson and Hamilton. Hmm, can't figure why.
Korea was the beginning of the end for that construction. 55,000 dead in Korea and still there 60 years later, 58,000 dead in Viet Nam, who knows how many in the middle east and Senator McCain says we may be there 100 years.
Agreement is not needed. The common element of this conversation is that it is a guiding document that has made this a great country. It seems we lose our way when we drift too far from the guiding principles of it.