I do not recall the amendment to the Constitution that granted the Iraqi parliament the war powers delegated to Congress.
Again, that's not what anyone said. Iraq (our ally, legally speaking) is under attack. The President has the right to use force to defend them. I'm sorry, but you just aren't going to get around this.
Can you point to a provision that says that the President can go to war unilaterally so long as Iraq is under attack? Treaties do not count, as the Constitution is theoretically the highest law of the land, and thus could only be legally superseded by an amendment process.
Actually, Congress has been authorizing the use of force going all the way back to the Quasi War with France without using a formal "declaration of war". It's not just the war powers clause but also the power "To define and punish Piracies and Felonies committed on the high Seas, and Offences against the Law of Nations;" that is applicable when it comes to the use of force.
Fair enough, but where is the Congressional authorization for force against these landlocked pirates called ISIS?
Good question. Why can't Congress get its sh*t together?