The interview comes as GOP lawmakers are wrapping up a yearlong investigation into decisions made at the Justice Department during the 2016 presidential election.
Former FBI Director James Comey said he will return for more questioning on Capitol Hill later this month, as President Trump ripped into him for apparently declining to answer certain questions on the advice of his attorneys during Friday's closed-door session.
And Comey's lawyer recently explained that his client did not want his words to be "twisted" by Republicans, which appears to be exactly what Trump has done.
Committee lawyers fought back at Comey's "grandiose" arguments, saying he wanted to 'dictate the terms of his appearance by demanding a public hearing'.
Mueller was to reveal more details about his Russian Federation investigation in court on Friday as he faced deadlines in the cases of Trump's former campaign chairman, Paul Manafort, and former personal lawyer Michael Cohen.
In May 2017 Trump abruptly sacked Comey, who was the senior official leading a criminal investigation into possible collusion with Moscow.
"It's a waste of time to start with", Rep.
"The entire goal of this investigation is to cast aspersion on the real investigation, which is Mueller", Nadler told reporters outside Comey's testimony.
The committee is expected to release a transcript of the Comey interview as early as Saturday.
House Republicans have faced criticism - even from GOP Oversight Chairman Trey Gowdy, who is co-leading the effort - throughout their probe for breaking confidentiality agreements and selectively leaking portions of witnesses' answers that are often misleading without proper context.
Comey said he might answer questions after the session on Friday.
Over the past year, Republicans on the two separate House panels have brought in a series of officials and said after the closed-door meetings that there is ample evidence of bias.
It a series of tweets early Friday, the president blasted Comey and the Mueller probe into Russia's hacking of the 2016 USA national election. The investigation's most public moment was a 10-hour hearing in which former FBI special agent Peter Strzok defended anti-Trump texts he sent to a colleague as he helped lead both investigations.
Comey was asked on his way into the meeting room about President Trump's assertion that he is best friends with special counsel Robert Mueller, who is overseeing the Russian Federation probe.
The Republican chairman of the House's judiciary committee, Virginia Rep. Strzok defiantly fought with angry Republican lawmakers in a riveting hearing that featured Strzok reading aloud from his sometimes-lewd texts, and Democrats and Republicans openly yelling at each other.
"You're going to be displeased and maybe a little surprised by the answers", Issa said on Fox News following the Capitol Hill press gaggle.