Republican National Committee chairwoman Ronna Romney McDaniel noted on "Fox News Sunday" that no evidence has yet been produced of collusion between Trump's campaign and Russian Federation, which the US intelligence community and elected officials of both parties conclude meddled in last year's election.
"Well, I'll tell you about that maybe sometime in the very near future", Trump said.
The former Federal Bureau of Investigation director said he publicly disclosed memos about his meeting with Trump because he felt the White House may deceive the public about the nature of the meetings and Comey's firing.
Louis Michael Seidman, a professor of constitutional law at Georgetown University, agreed that the case for charging Trump with obstruction of justice is not there, but he said that Comey's firing after he refused to carry out the president's wishes is "a serious matter".
The first challenge is the word "hope". Trump attorney Jay Sekulow, who appeared later on the show, argued that Comey's decision was "unprecedented" and that Comey did not give the Trump administration an opportunity to determine if they would invoke executive privilege on the memos.
Questioned about Comey's central claim that Trump told him to lay off Flynn, the president responded: "I didn't say that". He had explained to the President how important it was that the F.B.I.be independent. Asked if he saw it as an "order", Comey replied "yes".
Comey was pilloried for his handling of the Hillary Clinton email investigation, yet is now seen as a critical cog in the inquiry into possible connections between Russian Federation and the Trump campaign. "Something about the way I was conducting it, the president felt, created pressure on him that he wanted to relieve".
As for the timing of his recusal, Comey said the FBI expected the attorney general to take himself out of the matters under investigation weeks before he actually did.
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"It's going to get investigated". I mean, I will tell you I didn't say that. I don't see any evidence of intent to obstruct.
That could come from any of several corners.
Questions over whether such tapes exist have been swirling ever since Trump tweeted on May 12, "James Comey better hope that there are no "tapes" of our conversations before he starts leaking to the press!"
Trump lashed out at Comey, dubbing him a "leaker" for indirectly providing reporters with the contents of his memos summarizing their private conversations in the weeks before he was sacked.
"I didn't say that", Trump insisted Friday, before heading to his New Jersey golf club in Bedminster where he will spend the weekend.
Comey said that because his writings were unclassified, he felt he could share them with the media.
Celebrated criminal defense lawyer Alan Dershowitz has argued in a lengthy Twitter commentary that Trump was at worst guilty of "political sins"; he said there is "no plausible case" for obstruction charges.
He was the USA attorney in Manhattan who in 2003 charged Martha Stewart with obstructing justice in a stock trade investigation. "The president has the authority to tell the director of the FBI to stop an investigation".