This will help restore the Constitution. Because the vote WILL pass. There's not enough demons to stop it.
And the Senate doesn't dare fillibuster.
On the flip side, if, God forbid, the war does not go as well as hoped and planned, and we suffer a lot of casualties, you'd better believe Congress will be strutting around and saying things like, "Well, the President exceeded his authority...he's a madman, I tells ya...we never meant for him to go that far!" We can already see equivocating by a few Congresspukes.
And if they vote on a resolution, and it does not pass, and the President does not go to war, and something bad happens, Congress has only itself to blame.
Protect the President. Hold Congress accountable. Get them to declare war.