"It doesn't seem like you knew what you were talking about," Pelley snapped at Trump's alleged election accomplice.
The preliminary finding came after Eastman completed his testimony in a California trial that could potentially result in his disbarment.
The Supreme Court's decision affirms a lower court ruling that identified the former Trump attorney as a key figure in overturning the 2020 election.
John Eastman clammed up when faced with a question about the extent of his efforts to overturn the results of the 2020 presidential election.
Legal commentators have been baffled by the Trump co-defendant's decision to talk about his case on TV.
Legal commentators suggested the former Trump attorney incriminated himself on TV.
The former Trump attorney and co-defendant had insisted he had "lots of evidence of fraud."
Too religious to flip, but not too religious to try to overturn an election?
The ex-president is expected to turn himself in on Thursday.
The lawyer's bond has been set at $100,000.