Invoking executive privilege would theoretically allow Mr. Trump to block Comey's testimony. Roy Blunt, a member of the Senate intelligence committee. A special prosecutor, Robert Mueller, has been set up to look into it, as well.
Blunt is a member of Senate Intelligence committee that on Thursday is holding the hearing on the matter that is expected to include questions about whether President Trump pressured Comey in the FBI's ongoing Russian Federation investigation.
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. "Arguably, Trump has himself breached that confidentiality", Harvard Law professor Noah Feldman said in a Bloomberg op-ed.
James Comey's testimony will be the first public remarks he makes since Trump fired him..
In his May 9 letter firing Comey, Trump said the former FBI director had informed him "on three separate occasions that I am not under investigation".
"Sooner rather than later, let's find out what happened and bring this to a conclusion".
"When that word comes up, I always say to my colleagues in the Congress, my constituents, and people across the country what I said before: Anything you do has to be based on data, evidence, facts".
"We need to hear directly from Mr. Comey on these important issues", Collins told "Face the Nation". "It's an excuse by the Democrats for having lost an election that they should've won".
"Does Mr. Comey agree that that is what was said?"
Blunt spoke in the aftermath of the latest terrorist attack in London on Saturday night that killed seven and injured dozens more.
"Clearly, it would be very, very troubling if the president of the United States is interfering in investigations that affect potentially the president and his closest associates", said Sen. I didn't even really talk to him.
"When we've seen things like (the 2015 mass terrorist shooting in) San Bernardino, more often than not, USA officials, the Federal Bureau of Investigation and others talk to these people, after months of surveillance decided they no longer needed to be under the level of watch they were and then suddenly these kinds of things happen".
"If he doesn't say anything categorical, if he says, "Well you know, I felt this way, it could have been otherwise". if it is less than fully clear, then I think it gives both sides a lot of ammunition to argue through the rest of the summer and probably into the fall about what does all this mean".