You seem to be purposely ignoring what people are telling you. Clinton, the US Congress, the CIA, UNSCOM, the UN, Tony Blair, most European leaders, have ALL stated for a fact that Iraq was in posession of WMDs AFTER 1998.
Now, my question again. What has changed that has made that information inaccurate?
The failure to find any weapons and any facilities to make any chemical weapons. The chemicals have a short shelf life and need to be made fresh regularly. Any left overs from before 1991 would have been useless by now. If follows that all the stories we were told, giving quantities of this and that chemical weapon were fairy tales, without any factual basis. The chem/bio stories were not obvious lies before the war, they were in the realm of possibility based on public information. The nuclear stories were clearly false from public information.
The post war facts tell us that the chem/bio stories were false as well.
But YES, he did have them, using the past tense. It just makes a really big difference when. It makes absolutely no difference who else was making the claims, unless you are claiming mass psychosis as an excuse.