House and Senate investigators fired off a series of requests after former FBI Director James Comey's testimony, seeking memos of his private discussions with President Donald Trump and any records the White House kept of their discussion - including audio recordings.
In sworn testimony to the Senate on Thursday, Comey painted Trump as untrustworthy and admitted he asked a "friend", identified as a Columbia University law professor, to release a memo of his conversations with the president to the press.
At the same time, Mr. Trump has said he feels vindicated by Comey's testimony.
Trump spent Friday claiming "vindication" after Comey's testimony, while still accusing the former Federal Bureau of Investigation director of lying about their interactions.
Trump made the remarks during a joint news conference with Romanian President Klaus Iohannis at the White House Friday afternoon. "I would be glad to tell him exactly what I just told you", Trump told a reporter.
They separately wrote the White House counsel Don McGahn asking whether the recordings exist, and if so, that they be produced to the committee by June 23.
Comey said he took that as a presidential command. He did say, under oath, that you told him to let the Flynn - you said you hoped the Flynn investigation he could let -PRESIDENT TRUMP: I didn't say that. Of course this episode and the broader Russian Federation scandal are only one piece of that, but anyone tempted to believe that Trump's bluster was limited to peripheral situations will certainly know that he acted unprofessionally and worse even with national security and his own political viability on the line.
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.
Trump suggested on Twitter last month that the conversation was taped, but has been evasive about it since then.
"I hope and pray to God you did not say anything about a weapon when you were in Iowa".
Trump Jr. has certainly been willing to go on the attack for his father before.
The noncommittal response leaves the door open to White House tapes, something that legal experts say would fall within the purview of special counsel Robert Mueller's investigation into Russia's 2016 election meddling and the Trump campaign's potential role.
The president said he was "Very, very happy, and, frankly, James Comey confirmed a lot of what I said, and some of the things that he said just weren't true".
What troubled Comey, he said, was "the circumstances, the subject matter and the person I was interacting with".
On March 30, 10 days after Comey had testified that there was an ongoing investigation into possible coordination between Russian Federation and the Trump campaign, the president called Comey.
And it seems unlikely that Comey, who led the FBI as it pursued investigations into government leaks, and thus presumably knows the law here well, would incriminate himself on live TV while testifying before the U.S. Senate, Clark added.