Alan Dershowitz called on FBI agent Peter Strzok to explain to the American people what he meant when he sent a text message about "stopping" the election of Donald Trump.

Strzok, who worked on the Hillary Clinton email probe and Special Counsel Robert Mueller's Russia investigation and testified to Congress behind closed doors Wednesday, has been accused of showing bias against President Trump in text messages to a colleague with whom he was romantically involved.

Strzok texted then-FBI attorney Lisa Page in August 2016 that "we’ll stop" Donald Trump from becoming president.

"[Trump’s] not ever going to become president, right? Right?!" Page texted to Strzok.

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"No. No he won’t. We'll stop it," Strzok responded.

Another text from August 2016 referenced an "insurance policy" against a Trump presidency.

Dershowitz said Strzok wanted a closed-door testimony because the controversial FBI agent couldn't explain the texts in a reasonable way.

"That sounds like collusion, that sounds like interference by the FBI in an election, and he can’t explain that," Dershowitz said on "Fox & Friends."

He said the American public has a right to see Strzok's testimony and assess his credibility.

"You have to see him, you have to see his facial expressions, you have to see how many times he turns to his lawyer, you have to see whether it looks like he’s making up a story to satisfy the American public," Dershowitz said.

"Explaining what he meant by an 'insurance policy' to prevent the election of a president is something the public has a right to [see].”

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