Democratic presidential strategist Bob Shrum agreed, saying Romney's failure to release his tax returns makes him a "punching bag."
"It does make him a hidden figure and a punching bag," Shrum said. "…I tell you on this tax issue, Steve [Schmidt] and I have both been there. You sit down with the candidate and you say, 'Look, we should release these tax returns.' And either Romney or people in his campaign who have seen it said we'll take worse damage if we release these returns than if we hold on to them. So I think he's going to live with this issue all the way through."