Former Fox News star Bill O’Reilly, the current host of a program on The First streaming network, said in an interview on Tuesday that one person’s testimony could result in Donald Trump going to prison.

In an interview with radio host Sid Rosenberg, O’Reilly said former Vice President Mike Pence is that person.

“So there’s only one guy that can convict Donald Trump, and that’s Mike Pence,” he said. “If Pence goes into the courtroom and says ‘Donald Trump knew the election was not a fraud, but he said it anyway, and I can prove it, and here’s the proof,’ Donald Trump goes down.”

He went on to say he doubted that Pence would have the required proof. However, “If somebody like [then-chief of staff] Mark Meadows would say ‘Yeah, I was in the same conversation and Trump said X, Y, and Z,’ the jury in the trial, whatever gets there, that would be really damning,'” O’Reilly added.

“Pence, himself, is an honest man. He’s in over his head now. He did the right thing because there was no basis not to certify the electoral votes. In order for Pence to not certify them, there would have had to been evidence presented in a federal court about massive fraud in the election. That evidence was not presented, so constitutionally, Pence had to do what he did. Donald Trump doesn’t believe that, will never believe it, because he doesn’t want to believe it. But that’s the historical fact,” the former Fox host said.

He also said that it would be tough to prove that the former president did not actually believe his claims about the 2020 election.

“For the federal government to go in and say to a jury ‘Oh he really didn’t believe that.’ That’s not true. Trump believed it because he wanted to believe it, and I am sitting here going, ‘If that’s your case, you’re gonna lose.’ The government will lose, okay? But if Pence comes in with something to contradict my analysis, then things change,” O’Reilly added.