Trump's comments ignited a firestorm among United States lawmakers, foreign-policy experts, and intelligence veterans. "Given what Mr. Putin said today, given the indictments, given what Mr. Trump said today, that can not happen", said Schumer.
McCain, who has been away from the Senate as he battles brain cancer, said the damage inflicted by Trump's "naiveté, egotism, false equivalence, and sympathy for autocrats is hard to calculate".
President Trump and Russian President Vladimir Putin held a joint press conference Monday following a historic meeting in Helsinki, Finland. When asked if he had any incriminating evidence over Trump or his family, Putin gave a laugh.
"Today is a good day for Putin and the oligarchs in Russia", Sanders added.
Republican Sen. Lindsey Graham of SC, a golfing partner of the president, called the event a "missed opportunity" for Trump "to firmly hold Russian Federation accountable for 2016 meddling and deliver a strong warning regarding future elections".
Finnish police said Husseini was removed from the room at the Presidential Palace in Helsinki and detained for interrupting the packed event, which was being covered live.
As a retaliation against President Trump's and his Russian counterpart's repeated attacks on media Finland's largest newspaper Helsingin Sanomat made a decision to "welcome" the presidents with a billboard campaign displaying what free press is all about.
Sitting next to Putin in Helsinki, Trump started his remarks by congratulating the Russian president on the World Cup.
"(The) posture of President Trump on Crimea is well-known, and he stands firmly by it", Putin said.
The Wisconsin Republican says the American intelligence community and the House Intelligence Committee agree that Russian Federation interfered in the election.
"No prior president has ever abased himself more abjectly before a tyrant", he said. Ryan says Russian Federation "remains hostile to our most basic values and ideals".
But at their joint press conference it was all talk of co-operation and understanding, President Trump criticising not Russian interference in the United States elections, but the investigation into it, describing the probe as a "disaster for our country". "The best people to check him are not Democrats, but his fellow Republicans".
The "Russian meddling" saga inevitably stole the limelight at the summit and the two leaders discussed it in private as well as during their joint press conference.
House Speaker Paul Ryan delivered a strongly worded statement, saying there's "no question" that Russian Federation interfered in the 2016 presidential election, and noting that USA intelligence agencies and a House panel agreed. By extension, he is telling Putin and the world that he believes the shady Russian president over his own intelligence agencies.
Putin categorically denied the existence of such a tape, calling it "nonsense" and claiming he had no idea Trump was even in Moscow at the time.
Trump appeared to be convinced by Russia's President.
After the Associated Press White House reporter Jonathan Lemire asked Trump during a joint press conference with Putin who he believed and whether he would publicly denounce Russia's interference in the 2016 U.S. election and warn Putin never to do it again, Trump declined to do so and appeared to pin the blame on the US.
And a former Central Intelligence Agency director says it's treasonous.
Arizona Sen. Jeff Flake, a Republican and constant critic of Trump's, called Trump's performance "shameful".
Trump went on to claim the Mueller probe was part of a pattern of "stupidity" that hurt USA relations with Russian Federation.