UNSC Resolution 1441 does not authorize any nation or nations to attack Iraq on the basis of that resolution or any other resolutions. It says:

Reaffirming the commitment of all Member States to the sovereignty and territorial integrity of Iraq, Kuwait, and the neighbouring States,

Then it talks about the decisions it has made with regard to inspections and what Iraq needs to do to be in compliance with the resolution, and it:

10. Requests all Member States to give full support to UNMOVIC and the IAEA in the discharge of their mandates...

...and then it says that it:

14. Decides to remain seized of the matter.

And that's that. The US violated the terms of this resolution by not keeping it's commitment to honor the territorial integrity of Iraq, and by interfering in the inspection process by UNMOVIC and the IAEA, by attacking Iraq and thus ending the ability of the inspectors to continue to do their job.

SECURITY COUNCIL RESOLUTIONS - 2002

Click on:

"Security Council resolution 1441 (2002) The situation between Iraq and Kuwait"

It's not possible to uphold a UN resolution by violating a UN resolution.