McCabe was also at the center of a controversy in the Clinton email investigation - the case that administration officials have pointed to as Trump's basis for firing Comey.
That work, namely by the Senate Intelligence Committee, shifted Wednesday to a more aggressive tack.
Thursday's hearing was scheduled to address global security threats, but there were frequent questions about Comey and the FBI's Russian Federation probe. Warner said he was offended at Trump's remarks.
The Senate Intelligence Committee has invited Comey to testify again next week, raising the prospect of another day of harm to the president. Ryan said the president, members of both parties and top Justice Department officials had lost confidence in Comey, and said "it is entirely within the president's role and authority to relieve him".
The president was referring to a memo prepared by Deputy Attorney General Rod Rosenstein - and signed off on by Attorney General Jeff Sessions - that called for axing Comey because he, during the 2016 campaign, went around the department's chain of command.
Spicer is expected to lead the Friday press briefing at 1:30 p.m. according to a statement released by the White House Thursday evening.
What kinds of people are appointed to a special counsel? That in response to a question from Sen.
Trump's sudden firing of Comey shocked Washington and plunged Trump deeper into a controversy over his campaign's alleged ties with Russian Federation that has dogged the early days of his presidency. I guarantee you there will be more shoes to drop, I can just guarantee it.
Arrested journalist says he was only trying to do job
Heyman says he was in a public space at the time , but Lieutenant Johnson counters that it was not a public area when Mr. But the rule of law will prevail. "I believe that they concluded this individual had crossed a line", he said.
"I said, if it's possible would you let me know, 'Am I under investigation?' He said: 'You are not under investigation'". Trump said there was no "collusion between me and my campaign and the Russians", but that "the Russians did not affect the vote".
His explanation of why he fired Comey ran counter to previous administration explanations of Comey's dismissal.
She contended that Comey "took a stick of dynamite" and threw it into the Justice Department by "going around" the chain of command in announcing his initial decision about Hillary Clinton's email usage as secretary of State.
Asked by reporters why he had sacked Comey, President Trump said: "He wasn't doing a good job". All have expressed anger that the decision to fire Comey wasn't properly executed and created a sharp backlash.
"He needs no congressional authorisation", Mr Schumer said. As Democrats and historians warned in lofty tones that the president was threatening the very rule of law, Trump responded with a volley of furious tweets about "phoney hypocrites" and "fake news". Besides McCabe, also testifying were Director of National Intelligence Daniel Coats, CIA Director Michael Pompeo, National Security Agency Director Admiral Michael Rogers, Defense Intelligence Agency Director Lieutenant General Vincent Stewart and National Geospatial-Intelligence Agency Director Robert Cardillo.
I have said to you before that, in times of turbulence, the American people should see the Federal Bureau of Investigation as a rock of competence, honesty, and independence. But he said informing someone that he or she is not part of an investigation would not be standard practice.
On Monday, Mr. Trump met with Sessions and Rosenstein, and they discussed the reasons for removing Comey, the White House said.
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