Mueller was appointed earlier this year as a Justice Department special counsel to determine whether Trump associates colluded with Moscow to influence the outcome of the 2016 White House race.
Yesterday John Roberts and Alex Pappas reported for FOX News that Special Counsel Robert Mueller has obtained transition documents including confidential attorney-client communications, privileged communications and thousands of emails without their knowledge. "If I felt he was doing something inappropriate, I would take action".
Treasury Secretary Steve Mnuchin and Marc Short, White House director of legislative affairs, said Sunday in separate interviews that they were unaware of any such discussions.
Rep. Jackie Speier, California Democrat, told KQED Radio Friday that there was a "rumor" that Mr. Trump planned to fire the special counsel on December 22, which White House special counsel Ty Cobb denied in a statement.
"There's no conversation about that whatsoever in the White House", Short said on "Meet The Press". "We have continued to cooperate in every single possible way with that investigation", Mr.
Sen. James Lankford, R-Oklahoma, told CBS's "Face the Nation" on Sunday that the indications of political bias are "very serious", but a distinction should be made about whether Strzok was "directing the investigation one way or another".
Democratic lawmakers in recent days have expressed concern that Trump might fire Mueller, who is investigating allegations of Russian interference in the 2016 US presidential election and whether Trump or anyone on his team colluded with Moscow.
"I'm increasingly anxious Republicans will shut down the House intelligence committee investigation at the end of the month", Adam Schiff, the leading Democrat on the House intelligence committee said prior to reports of the letter this weekend.
During a House Judiciary Committee last week, Republicans slammed the special counsel's office over what they said was the Democratic-leaning bias of some of its key lawyers and investigators.
Senator-elect Doug Jones, D-Alabama, told "State of the Union" that he believes the investigation will roll on, but added that "anybody would need to be concerned if Bob Mueller was sacked".
"Of course Mueller obtained emails from a third party", Renato Mariotti, a former federal prosecutor, said, also on Twitter. "I don't think he's going to rush it".
Trump criticized the Federal Bureau of Investigation while speaking with reporters on Friday, calling the state of the agency "sad" while referring to released text messages that were critical of him between an attorney and an agent working on the case.
"Well, it's a shame what's happened with the FBI", Trump said. "It's a very sad thing to watch, I will tell you that".