"The sentence should have been, 'I don't see any reason why I wouldn't, or why it wouldn't be Russian Federation'".
"We are starting to achieve some understanding which gives us sufficient ground to say that some things - a lot of things changed to the better during today's meeting", he said.
"Today's meeting is only the beginning of a longer process, but we have taken the first steps towards a brighter future", Trump said.
CNN's Anderson Cooper declared that the press conference was "perhaps one of the most disgraceful performances by an American president at a summit in front of a Russian leader that I have ever seen".
'It is the most serious mistake of his presidency and must be corrected--immediately'.
After showing footage of Trump refusing to criticise Putin for Russian interference in the 2016 election, Kimmel said, "Well, I guess that settles it". To Russia hawks, even consideration of the proposal pointed to the success of Putin's efforts to shake the foundations of American democracy.
Mr Trump stunned United States political allies and foes alike with his answer to a question about Russian hacking and interference in the 2016 election.
Rep. Cathy McMorris Rodgers, the fourth-ranking Republican in the House, said Trump "missed the opportunity" to deliver a stronger message to his Russian counterpart.
The summit, which was controversial to begin with, came just three days after Deputy Attorney General Rod Rosenstein indicted 12 Russian nationals for conspiring to interfere in the 2016 presidential election - including the hackings of the Democratic National Committee, Hillary Clinton campaign employee's emails and state election systems. Not surprisingly, Hannity had strong words of praise for Trump, who in turn had strong praise for Putin.
On his way home, Trump insisted in a post on Twitter that he has "GREAT confidence in MY intelligence people".
"However, I also recognize that in order to build a brighter future", he added, "we can not exclusively focus on the past - as the world's two largest nuclear powers, we must get along!"
The top Republican in Congress, House Speaker Paul Ryan, publicly contradicted Mr Trump, claiming: "There is no question that Russian Federation interfered in our election and continues attempts to undermine democracy here and around the world... the president must appreciate that Russian Federation is not our ally".
"Interference with the domestic affairs of the United States - do you really believe that someone acting from the Russian territory could have influenced the United States and influenced the choice of millions of Americans?"
Putin said both countries considered it "necessary" to further work together on many issues, including extension of the Strategic Arms Reduction Treaty, the risky situation surrounding the development of elements of the global system of American missile defense, and the implementation of the Treaty on the Elimination of Intermediate-Range and Shorter-Range Missiles as well as avoiding weapons being placed in space.
The host also mocked Trump for blaming both the United States and Russian Federation for the break down in the relationship between the two countries.
The language used by Democrats was much harsher, including accusations of "treason".
Putin added that Wallace was "completely deceived", saying, "I am very sorry that you do not know the real situation...about Syria". "It makes us less safe", Biden said.
Congressman Adam Schiff, the senior Democrat on the House Intelligence Committee, said Trump had given Putin "a green light to interfere in 2018".
Pushed on why people should believe his rebuttal, Mr Putin demanded that those making the claim - which have included the U.S. intelligence community - provide proof.
Coat's predecessor, James Clapper, called Trump's acquiescence to Putin "an incredible capitulation", while former Central Intelligence Agency chief John Brennan labelled it "nothing short of treasonous".
During the interview on Fox News, Putin also invoked the assassinations of President John F. Kennedy and civil rights icon Martin Luther King Jr. when he was asked about the deaths of his own political opponents.
Former CIA chief John Brennan went further, suggesting Trump should be removed from office: "Donald Trump's press conference performance in Helsinki rises to & exceeds the threshold of 'high crimes & misdemeanors.' It was nothing short of treasonous. They have no information on Trump", Trump said.