The ISG (Iraq Survey Group) found no evidence that Iraq had WMDs since 1991, when it destroyed its nuclear and chemical warfare program.
https://en.wikipedia.org/wiki/Iraq_Survey_Group#Duelfer_Report
I'll be honest, I don't get why chemical weapons count as WMD's. I'm happy they aren't used, but they really are missing the mass descruction potential. I mean, carpet bombing does similar levels of damage.
Any commie speaking ever.
Nixon's "I am not a crook".
For a slight different interpretation, of the most unbelievable lie, maybe Al Gore's I invented the internet?