James Comey, the FBI director President Donald Trump fired in what may have been an attempt to stop an investigation into White House officials, is testifying before Congress this week - speaking on the matter publicly for the first time since he left his position.
Comey, ousted last month amid the FBI investigation into possible Trump campaign ties to Russian Federation, is set to testify Thursday before the Senate intelligence committee.
Associates of Comey said the former director kept notes of his conversations with Trump, including of a February meeting in which the president asked Comey to lay off an ongoing investigation into former national security adviser Michael Flynn - a topic that is sure to come up at the hearing.
It appears former FBI Director James Comey has cleared the biggest hurdle in his upcoming testimony before a Senate committee.
Principal deputy press secretary Sarah Huckabee Sanders said that Trump will not assert executive privilege to prevent Comey from testifying.
Comey is scheduled to testify Thursday before the Senate intelligence committee.
The Senate Intelligence Committee sent Comey a letter asking him to testify in front of both open and closed sessions of the committee in May.
"Sooner rather than later, let's find out what happened and bring this to a conclusion", Mr Blunt told Fox News. The questions Comey will be... But I think what you're seeing in Britain is a resoluteness, but also a recognition that, as the British went through three decades of IRA-related terrorism, they will carry on.
Some critics of Mr Trump have said that such a request, especially given that he later fired Mr Comey, could be interpreted as an obstruction of justice.
Comey reportedly wrote memos describing conversations with Trump before he was sacked in which Trump asked him to "let this go", referring to the Russian Federation investigation. On Monday morning, Trump upended the White House's week with a blitz of statements delivered via Twitter.