Notice the words "as he determines to be necessary and appropriate. . . "
The resolution authorized President Bush to use the Armed Forces of the United States "as he determines to be necessary and appropriate" in order to "defend the national security of the United States against the continuing threat posed by Iraq; and enforce all relevant United Nations Security Council Resolutions regarding Iraq."
So, as I said, they let the decider decide. They did not declare war. And spoke of how invading outside the UN would be wrong. The thing is JCC, do you want the truth, or an excuse for Bush?