There is gray area surrounding the parameters of this action, especially since the privilege is not a constitutionally established right of the president.
Legal experts have also said that the president likely undermined his ability to assert executive privilege by publicly discussing his dealings with Comey in tweets and interviews.
But she said Mr Trump will not take that step in order to ensure a "swift and thorough examination of the facts" related to Mr Comey's sacking and the multiple investigations into Russia's election meddling. The Comey associates said Trump asked the Federal Bureau of Investigation director to drop his Flynn probe the day after the retired Army general had been fired.
US President Donald Trump (L) speaks in Ypilanti Township, Michigan March 15, 2017 and FBI Director James Comey testifies before a Senate Judiciary Committee hearing in Washington, DC, May 3, 2017 in a combination of file photos. Just days after Mr. Trump's inauguration, he invited the director to dinner and, according to people familiar with Mr. Comey's account, asked him repeatedly for his loyalty, which Mr. Comey declined to give. Reports citing "sources" state that a memo allegedly records Trump pressuring Comey - although no memo has been produced to date. The White House has denied the president made that request.
This week, Trump is focusing on plans to invest in USA infrastructure, with several events scheduled.
His campaign for public and private funding for the projects will include a trip to OH about inland waterways and meetings with mayors, governors, and Transportation Department officials. Comey is expected to address whether Trump tried to influence the FBI's investigation of Russian influence into the 2016 election, including a probe of Michael Flynn, who resigned as Trump's national security adviser in February.
Trump's firing of Comey rocked official Washington at a time lawmakers and the White House are trying to make progress on both a tax overhaul and health-care reform, two high-profile Republican priorities slowly making their ways through Congress.
Independent analysts have said they dont believe Comey, now a private citizen, can be stopped if he is intent on telling his story. "The president wants to fix the problems, and he doesn't want to push these liabilities into the future".