P1. If Bush doubted there was good evidence of WMDs in Iraq, he would have planted a throw-down.
P2. There was no evidence of WMDs found in Iraq, not even a throw-down, despite every opportunity (even now!) to throw evidence down.
C. Bush did not doubt that there was good evidence of WMDs in Iraq.
(via but not endorsed by William Edmundson)
P1. If the Holocaust had really happened, Pope Pius XII, in his infinite goodness, wisdom and infallibility, would have like protested or at least said something.
P2. There is no evidence that the pope ever acknowledged, much less protested the Holocaust.
C. The Holocaust didn't happen, and must be a hoax.
(Final chapter of The Hoax of the 20th Century)
P1. If someone pursues policies that increase the size and power of the federal government, they must be a liberal.
P2. George Bush has pursued policies that increase the size and power of the federal government, perhaps to an unprecedented degree.
C. George Bush is a big time liberal.