President Donald Trump at Trump National Golf Club in Bedminster New Jersey
19 August, 2018, 21:32
People close to McGahn told the Times that he made a decision to fully cooperate with Mueller because he feared Trump was setting him up to take the fall for any potential illegal activity, including obstruction of justice.
Brennan is also scheduled to appear on NBC's "Meet the Press" on Sunday.
Donald Trump bragged online that his administration is the "most transparent in history".
Trump's remarks came after The New York Times reported that McGahn had "cooperated extensively" with the investigation by special counsel Robert Mueller, taking part in at least three interviews with investigators totaling 30 hours.
"The failing @nytimes wrote a Fake piece today implying that because White House Councel Don McGahn was giving hours of testimony to the Special Councel, he must be a John Dean type 'RAT,"' Trump wrote, misspelling the word "counsel", as he often does. However, the source played down the Times article, saying that there didn't seem to be anything revelatory in the report's information and adding that it was already known that Trump instructed McGahn to cooperate with Mueller's team.
"I allowed him and all others to testify - I didn't have to", Trump said in a tweet.
The New York Times reported that McGahn, spoke with Mueller's team about Trump's firing of the Federal Bureau of Investigation director James Comey and his push for Attorney General Jeff Sessions to claim oversight of the inquiry, and Trump's attempts to fire Mueller.
What's in the New York Times report? He provided the investigators examining whether Mr. Trump obstructed justice a clear view of the president's most intimate moments with his lawyer.
Trump tweeted early Sunday morning calling a New York Times "FAKE" that reported that McGahn has discussed accounts of multiple episodes at the center of Mueller's probe into whether Trump obstructed justice.
White House Counsel Don McGahn attends U.S. President Donald Trump's remarks about prescription drug prices at the White House in Washington, U.S. May 11, 2018.
Critics of the president have recently compared his decision to target the security clearances of critics and those involved in the Russian Federation investigation to the "enemies list" created by the Nixon White House to keep track of political opponents they meant to target with punitive measures.
Rudy Giuliani, who joined the president's outside legal team after Dowd resigned, told Reuters on Saturday that Trump's lawyers had been in contact with McGahn's counsel after he was interviewed and possessed "emails that say he provided nothing that was damaging or incriminating to the president".