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 US intelligence agencies and a House panel agreed.
"It's clear that Putin is a bad actor and should be treated as an worldwide pariah", Toomey said in the statement.
"Today is a good day for Putin and the oligarchs in Russia", Sanders added.
Asked about the tweet and whether he held Russian Federation responsible for anything, Trump said he held "both countries responsible" thinks the United States has been "fooling" and that "we're all to blame".
In a flurry of tweets and statements, several GOP lawmakers blasted Trump for creating a false equivalency between Russian President Vladimir Putin and US intelligence agencies when he cast doubt on USA findings that Russia interfered with the 2016 presidential election. Russian Federation has never been a friend to the USA, and they continue to pose a threat to America and our allies.
"Yes, I wanted him to win because he spoke of normalisation of Russian-US ties", he said at the news conference, acknowledging a preference that is widely suspected in Washington.
Putin then spoke more generally about the idea that he'd try to collect compromising material on "high-level" US businessmen visiting his country, such as the 500 businessmen Putin said visited St. Petersburg for an economic forum. Russian Federation is not an ally.
Republican Sen. Jeff Flake of Arizona, who has frequently sparred with the president, tweeted that the remarks were "shameful".
Trump's decision sparked outrage among lawmakers, including a number of high-ranking Republicans. But Trump did not strongly condemn the interference efforts, which USA intelligence agencies insist did occur, including hacking of Democratic emails, the subject of last week's indictment of 12 Russians. "Russia did meddle in 2016 election & are trying it again", Graham tweeted. Russia, he said, "remains hostile to our most basic values and ideals".
Sen. John McCain, the 2008 GOP presidential nominee and Trump foil, called it "one of the most disgraceful performances by an American president in memory". "I think that the United States has been foolish". He called it "nonsense" and insisted the Russian state had never interfered and would never interfere in the American electoral process.
Senate Minority Leader Chuck Schumer says Trump's remarks on his European trip, including Monday's news conference, have strengthened America's adversaries.
California Rep. Ed Royce, the chairman of the House Foreign Affairs Committee, said there is "no way" that Trump should be comparing the actions of US intelligence agencies to that of Putin's Kremlin. John Brennan, who served as Central Intelligence Agency director between 2013 and January 2017, called the president's comments "treasonous".
Trump's performance in the press conference stoked anger from members of his own party, earning rebukes from some senators and representatives.
Trump called it "direct, open, deeply productive dialogue" and said "our relationship has never been worse than it is now - however, that changed as of about four hours ago".