The 'authority' debate, once more

At the time of the Libyan intervention, there was a debate about the President's authority to participate, with air assets etc., in that French-initiated operation (without congressional approval). Now there may be a rerun of the debate with respect to his authority to expand air strikes against ISIS. Except that Congress is going to fall over itself in its haste to pass something that says "yes yes," so in the end the debate about presidential authority in this case won't, practically speaking, matter much.