Trump prosecutors' case is 'dead' and cannot be revived, says former Michael Cohen adviser

Former Michael Cohen legal adviser Robert Costello told "The Brian Kilmeade Show" that the prosecution in New York v. Trump has "nothing" that could revive their case against the former president. Speculation swirled this week that Trump's defense team could call Costello to the witness stand to lay out Cohen's credibility issues.

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ROBERT COSTELLO: There's nothing that I know about this case that could give the prosecution more life. This case is dead. It was dead on arrival. It never should have been brought. It should have been dismissed by this judge. He still has an opportunity to do that, but I doubt very much he will do that. So I don't think there's any downside with me [testifying]. I think there's only an upside, but it's a judgment call, you know? And I haven't been sitting in court, and I'd never seen any of these 12 jurors. So I have no feeling for what those people are like or which way they're leaning, or whether they made facial gestures during the weeks of trial that indicate which way to lean. So I'm not the right person to ask. The right person is the Trump team. They'll make whatever the correct decision is.

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Costello told "America's Newsroom" on Thursday that he believes he should be called to testify, that the Trump trial grand jury did not get all the information they needed and that some jurors might have "Trump derangement syndrome."

Costello, who represented Cohen at the start of the federal investigation, has been released from his attorney-client confidentiality agreement so he is able to discuss the