We noted yesterday that Senate Majority Leader Harry Reid told the Huffington Post that what he claimed was a Bain Capital investor had called him to say Mitt Romney didn't pay taxes for ten years - without saying who told him this, or what basis there was for the claim.
Earlier today, he doubled down on the unsubstantiated claim with reporters in Nevada:
"I am not basing this on some figment of my imagination," Reid said in a telephone call with Nevada reporters. "I have had a number of people tell me that."
Asked to elaborate on his sources, Reid declined. "No, that's the best you're going to get from me."
"I don't think the burden should be on me," Reid said. "The burden should be on him. He's the one I've alleged has not paid any taxes. Why didn't he release his tax returns?