“...what, if anything, would trigger the need for the Administration to come back to congress for a declaration of war or the authorization of the use of military force?”
Having done these briefings MANY times myself, this is an entirely improper question for a member of Congress to ask of a briefer. The briefers were clearly from DoD and/or the Intelligence Community. That question is a matter of policy, NOT intelligence and is not the purview of the IC and those two assholes should know that.
Senators Paul and Lee, you make me want to puke! Who owns your votes?
The briefers were clearly from DoD and/or the Intelligence Community.
Even worse: the briefers were cabinet members, heads of agencies, etc. Hopefully, next time they send some interns to brief these useless United States Senators.