At this time, I do not see any need for a war with Iraq. Saddam Hussein would be a threat to the United States only if (1) he has weapons of mass destruction; (2) he is able to deliver those weapons to the U.S.; and (3) he is willing to sign his own death warrant by participating in an attack on the U.S. that might be traced back to him.
There seems to be some dispute about whether he even has weapons of mass destruction, but everyone agrees that he has no means of getting them to the U.S., except perhaps in a suitcase or similar container. All reports I have seen indicate that he is a ruthless dictator whose highest allegiance is to his own power and survival, not the sort who would risk giving us a valid reason for destroying him.
So why is the administration so eager to violate international law, alienate countries that are currently helping us find al-Qaeda, risk destabilizing the whole Middle East, send our young soldiers to die, and (inevitably) kill innocent Iraqis just to end up with a different ruler in Iraq? It is one thing to defend the American Republic, but I'm not willing to have anyone's children die for the American Empire.