Seems to be fizzling. And Blair is, if anything, far more culpable in the dossier matter. So it doesn't look all that promising for the mouth-foaming Left.
People just aren't buying the "Bush lied!!!" narrative. Too much conflict with the historical/geopolitical context. Also, there's the fact that the people yelling it most loudly are just the sort that nobody listens to anymore anyway.
The best you can hope for is an acknowledgement that he made a mistake on a particular. But you've already got that.