Oh yes, they do it every time. Tony Snow had a wonderful sound montage the other day that had all the top Democraps of the mid-1990s griping about Saddam's WMDs and his ambitions to use them or sell them to terrorists. It was priceless and even had Hillary. It also had Al Gore complaining that Bush I had done nothing about Saddam's WMDs during the first gulf war.
One of the gripes was that Bush41 "hadn't finished the job" by taking down Saddam. Now they say that we had no right to do so and that this was an illegal war.
Sour grapes from the peanut gallery. Shut those unruly children up, already.