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Mark Penn, a pollster and former chief strategist for the Clintons, said Special Counsel Robert Mueller and the FBI are facing a "crisis in public confidence."

On "The Story" Thursday night, Penn pointed to a recent Harvard CAPS-Harris poll that found 63 percent of voters believe that the FBI has been resisting providing information to Congress on the Hillary Clinton and President Donald Trump investigations. 54 percent said Mueller has conflicts of interest that prevent him from doing an unbiased job.

Penn noted that those numbers do not reflect recent revelations about Mueller's Russia probe, including that a top FBI official, Peter Strzok, was pulled from the investigation after his anti-Trump texts were discovered.

"It's pretty obvious here that these text messages are only going to pile on to this growing, I think, crisis in public confidence," Penn said.

He added there are also questions about the FBI's involvement with the infamous anti-Trump dossier and former FBI Director James Comey's edited statement on the Clinton email probe.

"These are not just partisan issues. These are real issues that are going to have to be settled in this country," Penn said. "And somebody who's an adult is going to stand up, say so and clean this operation up."

Watch more above.

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