He will also hit back at President Trump's characterizations of Mueller's work and the threat of Russian election interference, saying, "This investigation is not politically motivated".
"I am stating to you it is not my understanding that he kicked me off because of any bias that it was done based on the appearance", Strzok said.
Her lawyer, Amy Jeffress, said they are working quickly to arrange a new time for Page to testify, noting that they were not able to obtain the proper paperwork from the Department of Justice before her scheduled testimony, nor would the panel provide them with the scope of the interview, as they are required to do.
Strzok called it "horrible and disgusting behaviour", and said he was stating his opinion the electorate would "stop" a candidate like that. Some Democrats applauded after he finished speaking.
In a fiery exchange between Rep. Trey Gowdy and FBI agent Peter Strzok during a House committee hearing Thursday morning, the FBI agent claimed he was unbiased despite sending numerous text messages lambasting then-presidential candidate Donald Trump while leading investigations into Trump.
"I don't give a damn what you appreciate Agent Strzok", Gowdy responded.
That meant Justice Department investigators could access all their messages, including the ones in which they criticized Trump and appeared to discuss how they might use their powers to keep him from being elected. "I want to know what it meant, Agent Strzok".
"This investigation is a political charade - a platform to elevate far-right conspiracy theories and undermine the special counsel's ongoing criminal investigation of the President and his campaign aides", Nadler and Cummings said in that statement.
Merkel responds to Trump: 'I have witnessed' Germany under Soviet control
German Chancellor Angela Merkel also responded Wednesday to Trump's remarks, offering Trump something of a history lesson. He also said he thought spending of 4 percent on defence - similar to the US level - would be the right level.
Embattled FBI agent Peter Strzok said he wrote an anti-Trump email after the future president insulted the Muslim Gold Star parents of a 27-year-old Army captain who was killed by a auto bomb in 2004 in Iraq as he tried to save other troops.
"But let me be clear, unequivocally and under oath: not once in my 26 years of defending my nation did my personal opinions impact any official action I took", he said. But the thought of exposing that information never crossed my mind.
"I have the utmost respect for Congress's oversight role, but I truly believe that today's hearing is just another victory notch in Putin's belt and another milestone in our enemies' campaign to tear America apart", Strzok will say, according to the remarks. "As someone who loves this country and cherishes its ideals, it is profoundly painful to watch and even worse to play a part in".
Federal Bureau of Investigation agent Peter Strzok has always been one of - if not the - central villain in the Republican Party's (fictional) story of how "deep state" Democrats conspired to exonerate Hillary Clinton for her criminal email activity - and then launch a "witch hunt" aimed at destroying an innocent Donald Trump.
The sharp tone of Strzok's statement set the stage for a contentious hearing following hours of closed-door questioning last week.
Strzok declined to answer a question from Republican Representative Trey Gowdy, head of the House Oversight and Government Reform Committee, about interviews he conducted during the FBI's Russian Federation probe, saying the agency had directed him not to discuss ongoing investigations.
Strzok admitted he had privately criticised Trump as well as other politicians, including Trump's Democratic opponent in the election, Hillary Clinton.