"I don't know what happened in that meeting", Director of National Intelligence Dan Coats said.
'Now, with that being said, if that doesn't work out, I'll be the worst enemy he's ever had.
Huckabee Sanders also announced that the White House would not proceed with a plan to extradite United States citizens to Russian Federation for questioning in exchange for Russian Federation allowing its intelligence officials to be questioned as part of the Mueller probe.
The invitation seemed to surprise Trump's own Director of National Intelligence Dan Coats, who was told about it during a live interview at an event in the U.S. state of Colorado.
Had Trump asked him 'how that ought to be conducted, I would have suggested a different way, but that's not my role.
"Okay?!" Coats gasp/laughed, hearing this for the first time, adding, "That's going to be "special".
The Russian ambassador to Washington also denounced "anti-Russian anger" in the United States and the "severity" of the US criticism of Trump's performance at the summit.
During a joint press conference with Putin after their meeting in Helsinki, Trump said he didn't see "any reason" why Russian Federation would meddle, adding that Putin was "extremely strong and powerful in his denial".
On Thursday, the White House said Trump "disagrees" with Putin's offer to swap the questioning of 12 Russians accused of 2016 election interference for an interview with the former USA ambassador. As they met for a brief photo call before close-door talks, the two men avoided eye contact and seemed unsure of how best to approach one another, with Trump slouching in his seat and Putin remaining engimatic.
The White House backtrack came just before the Senate voted overwhelmingly against the proposal. On Wednesday, Trump answered "no" to a reporter's question on whether Russian Federation was still targeting the United States, only to have Sanders say later he was saying "no" to answering any questions - not to the question itself.
And, the fact that a high-profile, high-stakes summit between the commanders in chief of the world's two biggest nuclear powers could be held without a solid achievement or failure to point to has flummoxed many.
"And there's been no president ever as tough as I have been on Russia", Trump told reporters before a cabinet meeting at the White House.
The Washington Post reported Trump was irritated that the USA seemed to be taking stronger actions against Moscow than the Europeans were.
He has yet to comment on the most recent announcement of a possible meeting in Washington, DC.
US Deputy Attorney General Rod Rosenstein, who issued the indictments against the 12 Russians last week, said on Thursday that the US would seek to warn the public in the future when it believes foreign states are trying to influence elections.
Mr Trump had made a stunning u-turn when he returned to the United States from Helsinki on Tuesday after claiming he misspoke when he said during the summit that he believed Vladimir Putin's assertion that Russian Federation had in fact not meddled in the election. He added, however, that it was up to the Kremlin to formally respond.