Credit where it's due: The PolitiFact rating of President Obama regarding his claim of support from 12 judges for the constitutionality of health care reform seems quite fair.
I can see room within PolitiFact's grading system for anything from "Pants on Fire" to "Barely True." PolitiFact aimed for the middle with a "False" rating.
An accurate grading, even if repeated regularly, obviously does not free PolitiFact from the charge of political bias. But it does help serve as a reassurance that PolitiFact's journalists operate with the aim of doing their jobs fairly.