Do you believe the War Powers Resolution is Constitutional?
See above - I believe that it is just as constitutional as the Posse Comitatus Act. If Congress can limit what the president can do as commander-in-chief domestically it can also limit what he does internationally, right?
The Resolution gives to the president pretty broad latitude for employing force without congressional authorization. What it doesn't do, is give him a blank check where clearly defined American interests aren't at stake. I think all things considered, that's a pretty could compromise and an effective check on executive power.