Here's what one of those esteemed fact checks said a few weeks ago. There were many others just like this one.
What we object to are the McCain-Palin campaign's attempts to sway voters â€“ in ads and on the stump â€“ with false and misleading statements about the relationship, which was never very close. Obama never "lied" about this, just as he never bragged about it.
Remember, these "fact-checks" were quoted by the Obama campaign as proof that Republicans were barking up the wrong tree on Ayers. So the MSM refused to cover the issue and then produced false fact-checks to cover Obama's tracks. Dishonest is the only polite word that comes to mind.