It was also reported that Trump went to great lengths to hide details of his conversations with Russia President Vladimir Putin. "We need to investigate, because we don't know whether, you know, the worst-case scenario is possibly true or the President is totally innocent and we need to get this thing over with - and so he can move forward with his agenda", Baker said at the time, according to CNN.
"I think it's the most insulting thing I have ever been asked", Mr. Trump told Fox News personality Jeanine Pirro when she asked if he has ever worked for Russian Federation. "It's just a hoax".
"I never worked for Russia", Trump told reporters.
Trump never answered Pirro directly, but went on to assert that no president has taken a harder stance against Russian Federation than he has.
Speaking outside the White House, Mr Trump told reporters that it was good to have strong relationships with Russia, China and India. However, Mueller is also probing whether Trump's firing of Comey constituted obstruction of justice.
The Washington Post also reported that Trump had concealed details of his conversations with Putin, including an instance in 2017 when the president took the notes of his interpreter and instructed him not to discuss the meeting.
The Times reported the counterintelligence probe was sparked in part by growing alarm about Trump's behavior, including comments he made suggesting he fired Comey over the Russian Federation investigation, which is now being led by Mueller.More news: California's largest utility filing for bankruptcy over billions in fire liability claims
More news: Jayme Closs' aunt gives positive update
More news: Key duo to return for Man City trip
On Sunday, congressional Democrats said the steps Trump took to keep his conversations secret brought forth uncomfortable questions about the relations between the two men and why the US president echoed some of Putin's positions.
Salon's Andrew O'Hehir took a deep dive into the details and political implications on Saturday, particularly noting the fact that while many of us have concluded that there was plenty of evidence Trump was compromised and this was just the last straw, the right just sees this as more evidence of a "Deep State coup".
According to document seen by CNN, James Baker, the FBI's top legal adviser at the time, told congressmen that the Federal Bureau of Investigation officials were considering whether Mr Trump was "acting at the behest of [Russia] and somehow following directions, somehow executing their will". There is no sense to have two investigations going on, so we want to work with them.
When Warner was asked whether he thinks Trump acted wittingly or unwittingly as a Russian agent, he cited a report alleging that Paul Manafort, Trump's former campaign manager, shared internal polling data with a Russian businessman believed to be connected to Russian intelligence.
Engel's staff is also working with Democratic leaders on the House Intelligence Committee, where chairman Rep. Adam Schiff, D-Calif., attempted previous year to subpoena the testimony, before Democrats were in the majority.
"Last year, we sought to obtain the interpreter's notes or testimony, from the private meeting between Trump and Putin", Schiff wrote on Twitter.