According to CNN, Priebus asked Comey and his then-top deputy, Andrew McCabe, on Feb. 15 to refute news reports about conversations between Trump campaign staff and Russian government officials. Comey and McCabe reportedly refused. The White House denied the story at the time.

That conversation happened the day after President Trump reportedly asked Comey to dial back the bureau's investigation of retired Lt. Gen. Michael Flynn, Trump's ousted, and preferred, national security adviser. As first reported by The New York Times, the former FBI director subsequently documented that conversation in a memo that leaked last week.

This week, The Washington Post reported Trump had been unsuccessful in persuading two of the most senior U.S. intelligence officials to publicly deny the existence of evidence linking his 2016 campaign to Russian efforts to undermine the American political process. Trump's request was made after Comey informed the House Intelligence Committee that the FBI was investigating.

Senior Trump aides recounted to The Daily Beast the shockwaves and "sustained panic," as one official described it, that news of the initial Comey memo sent through the administration and Trump's political inner circle. Along with the chaos and continued frustrations that came with attempting to manage the fallout, there was an immediate unease expressed by senior staffers, including Priebus, that more damning memos could be revealed in the coming weeks, if not days.

These officials spoke on the condition of anonymity so as to speak freely.