Even IF Saddam had WMD's (which he did not at the time of our invasion), what would be the rationale for invading and occupying his sovereign nation? He never threatened us in any manner and Iraq had absolutely nothing to do with 9/11. I can think of several countries that have WMD's as we speak yet we aren't invading them. Why not?
As the lead UN Patsie, our planes were being used to police the UN Imposed No Fly Zone and Saddam's troops were shooting at(Attacking)our planes on a regular basis. In fact, by him having his troops firing on our planes, it was for all intents and purposes an act of war!