President Trump sought to turn the tables on the Obama administration Monday after demanding a probe into whether his predecessor's FBI "infiltrated" his 2016 campaign, pointedly asking what then-President Barack Obama knew about the operation - while clashing with former CIA boss John Brennan. Following reports detailing how an FBI "informant" had multiple contacts with members of Trump's campaign, the president he'd formally seek a DOJ probe of whether agents surveilled the campaign for political purposes, and whether any such demands came from the Obama administration. While the DOJ swiftly asked the department's inspector general to handle that review, the president turned the spotlight to Obama.

Fox News Radio's Guy Benson & Marie Harf sat down with Fox News Senior Judicial Analyst Judge Andrew Napolitano to talk about the Mueller investigation one year later

What should people be looking for as to where Mueller is headed and when he might wrap up: Only thing people can be on the look out for is indictments and guilty pleas. We don't learn about Mueller from leaks, we learn about Mueller from documents filed in court and people who show up in court to address those documents. You won't see evidence of anything until Bob Mueller decides it's time to lay out the cards. (1:00)

On the Drum beat from people (unpredictably) against Muller at this point: Rudy Giuliani was not brought in as the lawyer to dwell in the weeds of legal niceties. He was brought in to precipitate a PR offensive NOT defensive on behalf of the President. (On Mukasey) I am surprised that a person as wise as he is and as fine a jurist he was would be putting a time table on any kind of criminal investigation. (4:44)

On Trump's demand that the Justice Department investigate whether the FBI infiltrated his presidential campaign: For the President himself to ask for an investigation of the origins of the investigation about him is really unprecedented, but he has the authority to do this. (7:15)

On torching Former CIA Director John Brennan: My belief is that John Brennan was instrumental in using British intelligence to gather data about the Trump campaign and passing it on to his bosses in the West Wing prior to the overt use of American intelligence.(13:30)

Listen Below: