Yet Saddam admitted there were. Thus the need for weapons inspectors. It's all outlined in the Authorization for Use of Force in Iraq, passed by a Democrat Senate.
I have an acquaintance that I met through a good friend. This guy was heavily involved in the search for WMD’s in Iraq. I believe his stories, they match released information very well. It is his contention that Saddam was being told by his own staff that the WMD’s were being developed and the factories were built etc; when the truth was that very little if anything was actually being done. Saddam just went along with it probably due to the big guy persona.
It is also this guy's contention that the CIA in particular told W what they thought he wanted to hear about Saddam.