“Let’s get the record straight,” Biden said at Simpson College here. “There’s a little, doctored video going around … saying I agreed with Paul Ryan, the former vice presidential candidate, about wanting to privatize Social Security.”

But the video in question — of Biden’s 2018 remarks to the Brookings Institution think tank — was not doctored by Sanders, whose campaign this month stepped up criticisms of Biden’s record on Social Security.

Sanders’ campaign did say in a recent campaign email that “Biden lauded Paul Ryan for proposing cuts to Social Security and Medicare” — which PolitiFact said Sanders’ campaign got wrong. But there is no evidence that the campaign altered any video.

Biden, however, referenced the fact-checking website in making a muddled claim: “PolitiFact looked at it and they doctored the photo, they doctored the piece and it’s acknowledged that it’s a fake.”