On Sunday Senator Mark Warner, a Virginia Democrat and vice-chair of the Senate intelligence committee, said it was suspicious that Trump has "parroted" the policies of Putin.
'Think of it, I had a one-on-one meeting with Putin, like I do with every other leader.
As a result, USA officials said there is no detailed record, even in classified files, of Trump's face-to-face interactions with the Russian leader at five locations over the past two years.
Trump's Democratic opponents have continually accused him of being beholden to Russian Federation during the 2016 race and throughout his two years in office, despite multiple policy decisions which Moscow has vigorously criticised.
I think Trump is correct on all of those particulars.
The president directly responded to the accusations during an interview with Fox News host Jeanine Pirro, pledging transparency about his encounters with Putin, specifically their meeting in Helsinki last summer.
The FBI opened an investigation into whether US President Donald Trump was secretly working on behalf of Russian Federation, according to the New York Times. Caring, as I do, a great deal more about policy than Twitter, I find that freakish. 'Anybody could have listened to that meeting, it is open for grabs.
"We have learned from this reporting that, even in the earliest days of the Trump Administration, the President's behavior was so erratic and so concerning that the FBI felt compelled to do the unprecedented-open a counterintelligence investigation into a sitting President and his possible cooptation by a hostile foreign government", said Nadler in his statement. But it held off on opening an investigation until the president sacked Comey, who refused to pledge allegiance to Trump and roll back the nascent Russian Federation investigation.
House Intelligence Committee Chairman Adam Schiff said he could not comment on the specifics of the report, but said his committee would press ahead with its probe of Trump's contacts with Russian Federation.
The Post's report comes as special counsel Robert Mueller continues to investigate Russian interference in the 2016 election - and whether there were any ties between the Kremlin and Trump campaign associates.
The White House press secretary, Sarah Huckabee Sanders, called the Times report "absurd" and said Comey was sacked for being "a disgraced partisan hack".
Then he went back to his attacks on Comey, former Federal Bureau of Investigation director Andrew McCabe and agents Peter Strozk and Lisa Page.
Trump also wrote that those who initiated the investigations, mostly former FBI leaders he has fired for "very bad reasons", did it with "no reason and no proof" as a response to his firing of Comey.
Trump's former personal lawyer, Michael Cohen, has been sentenced to three years in prison for multiple crimes, including felony violations of campaign finance laws that prosecutors allege were carried out under Trump's direction.