I count the term "United Nations" 18 times in the bill authorizing force against Iraq.
OK.
GHWB used the U.N. as the mechanism for launching the war in Iraq.
GWB was willing to do so, but they refused to stand up to their obligations.
So what does that mean? The US still had authority to act. The last resolution (1441?) only repeated the fact that member states had authority and provided a last chance for Saddam to comply.