This individual clearly does not understand the role of the 'weapons inspectors'. They are not there to look for anything - though they themselves seemed a little unclear on this point. They are there to accept from Saddam the evidence that he had, in accordance with the terms of the 1991 armistice and various UN resolutions, destroyed his chemical weapons, launch vehiles and dismantled his means of producing these items. Failure on his part to perform these actions, or to provide the proof that he had done these things, is cause for war. Saddam never did any of this stuff, so we went in and removed him.
If you want to have some fun, ask if he's actually read resolution 1441, and if he has any questions about it. Isn't it odd how we never hear about all these resolutions any more?