These included House Speaker Paul Ryan, and Republican senators John Thune, John McCain, Lindsey Graham and Susan Collins.
Now as the president returns to the White House in this hour, one question above all that he's facing is what is his relationship with the Deputy Attorney General Rod Rosenstein?
After a close Trump associate earlier this week said Trump was "considering" firing Robert Mueller, who was appointed special counsel last month, the White House said Trump has no intention to do so though Trump has the "right" to do so.
Tensions escalated with Mueller's latest moves.
ABC News reported that Rosenstein had already notified Brand that she would take over if he did so.
Gorelick added, "Mr. Kushner previously volunteered to share with Congress what he knows about Russia-related matters. He will do the same if he is contacted in connection with any other inquiry".
In another indication of the seriousness of the probe, Michael Cohen, a personal attorney to Trump, said he has retained attorney Stephen Ryan, a former assistant USA attorney, to represent him in the ongoing probes.
Vice President Mike Pence's office said on Thursday he had hired a lawyer known for defending government officials in high-profile investigations to help him with the Russian Federation probes.More news: Trump confirms he is being investigated over Comey firing in tweet
The Trump effect: The administration is "much more bellicose and willing to use force", Moorehead said, leaving a much "greater risk of abuse" of airstrikes under Trump. "We worked through all of that", Burr told reporters.
Mueller met Wednesday with the leaders of the Senate Intelligence Committee in an effort to ensure their investigations don't conflict. Mark Warner of Virginia, the panel's top Democrat, didn't provide any other details regarding the meeting. Mueller was appointed under a rarely used regulation that gives him a broad mandate to investigate just about anything he feels is necessary, which could ultimately include Rosenstein's role in Comey's firing. "The FBI leak of information regarding the President is outrageous, inexcusable and illegal", he said.
Citing unidentified "officials", The Post reported Mueller's probe has taken a dramatic turn. At the time of that report it was not clear that the FBI was investigating Kushner's business dealings. Trump tweeted on June 16.
Rosenstein also has authority to fire Mueller, if he finds evidence of good cause.
Flynn was dismissed by Trump in February after it emerged he had misled Pence about conversations with the Russian ambassador.
If proven to be true this would implicate Trump in an obstruction of justice, which is an impeachable offence.
Published reports have indicated that Mueller is looking into whether Trump tried to obstruct justice.
ABC News reported on Friday that Rosenstein has said privately he may need to recuse himself from matters relating to the Russian Federation probe because he could become a witness in the investigation. Trump, however, said he would have fired Comey regardless of Rosenstein's recommendations, and he had the Russian Federation investigation on his mind when he made the decision. "And in fact, when I made a decision to just do it, I said to myself - I said, you know, this Russian Federation thing with Trump and Russian Federation is a made-up story". And with the investigation reaching all the way up to Trump - and with Trump regularly tweeting about it - it's almost impossible for the White House to compartmentalize.
"As deputy attorney general, you are more involved in policy making, but in terms of the principles of the department and how we conduct our investigations and who we prosecute, those decisions are going to be made in the same way they have always been made", he said.