A Fox News legal analyst said Monday that Vice President Pence talking to special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE would be "dangerous" for him with the potential for a perjury trap.

"If [Pence] were to ask me, I would say the potential for that is great and grave, and he should stay away from this environment," former Judge Andrew Napolitano said.

Pence said Sunday that he is "more than willing" to sit down with Mueller's team in their investigation into possible collusion between Trump's 2016 campaign and Russia.

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President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE and Mueller have been dancing around the possibility of an interview since Trump signaled in January that he would be willing speak to Mueller under oath.

However, Trump's lead attorney Rudy Giuliani has repeatedly warned that the president interviewing with Mueller could be a perjury trap.

"I'm not going to be rushed into having him testify so that he gets trapped into perjury," Giuliani told NBC News in August. "And when you tell me he should testify because he’s going to tell the truth, that he shouldn’t worry, well that’s so silly because it’s somebody’s version of the truth, not the truth."

Napolitano also said that Pence's volunteering to interview is unusual behavior and indicates the vice president's respect for the investigation.

"It does tell me that he doesn't think it's a witch hunt. That he thinks it's a legitimate investigation or he wouldn't be cooperating with it," Napolitano told Fox.

"It also tells me that he's about the staunchest supporter that the president has and basically wants to go there and say, 'I was there and I didn't see anything wrong,' " Napolitano added.