Counterintelligence agent Peter Strzok worked on Special Council Robert Mueller's investigation of Trump's 2016 presidential campaign and allegations of collusion with Russian Federation until a year ago, when he was removed after text messages he exchanged with former FBI lawyer Lisa Page were revealed, showing their mutual contempt for Trump.
Ms. Page was scheduled to testify on Wednesday before the House Judiciary and Oversight and Government Reform committees.
Napolitano said Wednesday that if Page does, in fact, need more time to prepare, she should be given that time in order to ensure a truthful testimony.
There was, however, one crucial document Page lacked before her planned appearance-the testimony of Federal Bureau of Investigation agent Peter Strzok.
Meanwhile, other GOP lawmakers slammed Page's over her refusal to appear for the interview on Wednesday, with Ron DeSantis of Florida calling it "pathetic" and Jim Jordan of OH said she was "once again showing the double standard".
In a statement released Wednesday, Amy Jeffress said Page requires more time.More news: Kylie Jenner to become youngest self-made billionaire
The two committees' "bullying tactics here are unnecessary", she added. She plans to blatantly defy a congressional subpoena by refusing to appear for her deposition.
Trump has seized on Page and Strzok's inflammatory texts, which were detailed in a report by the Justice Department's internal watchdog last month, to paint the FBI and Mueller's investigation as biased.
"We will use all tools at our disposal to obtain her testimony", the Virginia Republican said.
"Americans across the country are alarmed at the bias exhibited by top officials at the Justice Department and Federal Bureau of Investigation, and it is imperative Congress conduct vigorous oversight to ensure that never happens again".
The president has repeatedly painted Mueller's investigation as a tainted witch-hunt led by Democrats.
Trump is 'not ever going to become president, right?More news: Bottom and rear of Galaxy Note 9 seen in leaked poster
Trump torched Page and Strzok on Tuesday while aboard Air Force One headed to Brussels. Following that report and the firing of Comey by Trump, the Department of Justice Inspector General launched an investigation.
Strzok, meanwhle, is scheduled for a hearing on Thursday, after previously having a lengthy private meeting in June.
Strzok was interviewed in closed session with lawmakers for 11 hours last month and his lawyer has asked the transcript be made public.
As the committees have investigated bias at the Justice Department, they have focused much of their ire on Strzok. He will return to Capitol Hill for the hearing Thursday, the first time he will speak publicly about the messages.
House Republicans have engaged in a war of words and threats against the Justice Department for withholding information about the Trump-Russia investigation.
Federal Bureau of Investigation director Christopher Wray and Deputy Attorney General Rod Rosenstein have rejected suggestions of bias against Trump, and have assured Congress that Mueller is conducting his probe appropriately.More news: Shearer: "The Third and Fourth Place Play-Off is utter stupidity"