Article 1441 alone does not permit the US or anyone else to go to war
The US administration and its supporters (including the UK Prime Minister) claim that no further UN declarations are necessary to comply with International Law. This is untrue. It was made perfectly clear in November 2002 when 1441 was passed, and this was emphasised by the US administration as the time, that no "automaticity" would result in war or force of arms. Of course, having obtained the passing of the sanction, the Administration and its friends are conveniently forgetting this.
A further sanction is most definetly required and this was implied by UN Secretary General, Kofi Annan earlier this week.

Of course the fallback stance of the Administration and its cronies is that if the UN declines to confirm war then it is a useless and demoralised entity. In other words, if you don't agree with us we will do what we want anyway.

What they really want to do is get rid of the UN and act in a unilateral manner - just like the loonies in the militias in the redneckland of Montana or where ever it is that they hang out. Law of the jungle will ensue.