The White House disputed the account. He dismissed outrage over Trump's disclosures as USA politicians whipping up "anti-Russian sentiment". "I think it's reaching the point where it's of Watergate size and scale, and a couple of other scandals we've seen", said at a dinner in Washington organised by the International Republican Institute, and where he was interviewed on stage by CBS contributor Bob Schieffer.
Trump left the White House Wednesday morning to head to CT where he was scheduled to give the commencement address at the U.S. Coast Guard Academy.
On CNN, Gergen said that "from a lay point of view" it appeared Trump was trying to impede the FBI's investigation.
Comey's memo, an apparent effort to create a paper trail of his contacts with the White House, would be the clearest evidence to date that the president has tried to influence the investigation.
Republican chairman of the House Oversight Committee Jason Chaffetz has stated he wants the Federal Bureau of Investigation to hand over all "memoranda, notes, summaries and recordings" of discussions between Trump and Comey. He said he would give the Federal Bureau of Investigation a week and then "if we need a subpoena, we'll do it".
Spicer continued to push back on Comey's claim of what Trump said in their meeting. Senator Mitch McConnell, the Republican leader in the senate, simply said he wished there was less "drama" emerging from the White House.
Rep. Justin Amash (R-Mich.), an iconoclastic libertarian, told reporters that if reports about Comey's memo are true he thinks Trump should be impeached.
Ross Douthat, a conservative columnist for the New York Times, wrote that while Trump may not be guilty of the "high crimes and misdemeanors" necessary for impeachment, he had shown himself incapable of governing the country.
The White House denied the version of the conversation described by Comey's aides, telling The Post "the president has never asked Mr. Comey or anyone else to end an investigation".
Trump fired Flynn on February 13, on grounds that he had misled Vice President Mike Pence and other officials about his contacts with Russians.
Asked what Mr Trump should do at this point, Mr McCain, who has long had a hard and complicated relationship with Mr Trump, referred once again to the Nixon presidency and said, "get it all out" before the public, "no matter what it is".
FBI Director James Comey is likely to testify in both public and private hearings about his interactions with President Trump.
The FBI has been investigating Russia's meddling in the USA election and whether there was any collusion with Trump associates.
"Morning Joe" co-host Mika Brzezinski asked King, who caucuses with Senate Democrats, on what grounds he would be willing to consider impeachment against Trump. "Memos, transcripts, tapes - the list keeps getting longer", he said. "I hope you can let this go" is what the notes say. Comey said he replied that "I agree he is a good guy" but said nothing to Trump about limiting the investigation.