Radio host Mark Levin slammed CNN's Brian Stelter in an open letter to the media reporter Monday, declaring his "ad hominem attacks" and "conspiracy theory" allegations were "incredible."
The letter comes after Levin, a former chief of staff to President Reagan's attorney general Ed Meese, alleged Thursday that the Obama administration was responsible for wiretapping Trump Tower before the 2016 election.
Levin reiterated Sunday in an appearance on Fox News that “the evidence is overwhelming” against Obama.
“The evidence is overwhelming. This is not about President Trump’s tweeting. This is about the Obama administration spying, and the question is not whether it spied,” the constitutional scholar said on "Fox & Friends."
“The question is who they did spy on and the extent of the spying that is the Trump campaign, the Trump transition, Trump surrogates.”
For almost 10 minutes, Levin cited various news reports including from the New York Times, Washington Post and Daily Mail (U.K.) as evidence of his claims.
Stelter, the 31-year-old host of CNN's "Reliable Sources," argued on the air over the weekend that Levin was responsible for starting a conspiracy theory that worked its way up to the president, whom Stelter called the "Conspiracy Theorist-in-Chief" after Trump tweeted out his allegation against his predecessor.
Terrible! Just found out that Obama had my "wires tapped" in Trump Tower just before the victory. Nothing found. This is McCarthyism!— Donald J. Trump (@realDonaldTrump) March 4, 2017
"Your ad hominem attacks about 'right wing' radio host and conspiracy theory stuff … incredible," wrote Levin, 59.
"I simply put together the stories that YOUR profession reported, on the public record," Levin continued. "Do you deny there were two FISA applications? Do you deny the first was turned down? Do you deny the second was approved? It's called the Foreign Intelligence Surveillance Court. It is about surveillance."
Levin emailed me, "Do you deny there were two FISA applications?" I replied: "I don't know. You don't know. The reporting is very murky." https://t.co/uSyUgooRl0— Brian Stelter (@brianstelter) March 6, 2017
"The fact that we cannot discern all the details because of the secrecy, except for what the media have revealed and selective leaks by the government, should cause you to want to know more, not to trash those who point it out," Levin continued in his letter.
Former Director of National Intelligence James Clapper told NBC's Chuck Todd on "Meet the Press" that there "was no such wiretap activity mounted against the president-elect at the time, or as a candidate or against his campaign."
Levin addressed Clapper's comments in his letter to Stelter as well.
"As for Clapper, despite his past dissembling before Congress, he may not have been aware of what was taking place since the FBI counter-intel operation reportedly sought the warrant," Levin wrote. "The Daily Intel Briefing might provide useful information in that regard as well."
"Of course, the release of the FISA applications would also shed a lot of light on events, assuming YOU believe reports that they were filed."
Levin concluded the letter by charging that Stelter's "lack of curiosity and dishonesty about such matters and in dealing with me demean you and your profession. You are free to circulate this communication to whomever you wish, as I am making it public."