During Monday's press conference with Putin, he refused to condemn Russia's interference, saying that he accepted the Russian president's denial and took Putin's word over the conclusion of US intelligence agencies, which he has continually attacked during his presidency. "There was no collusion at all".
Trump told reporters at the White House that he had faith in his country's intelligence agencies and accepted their conclusion that Russian Federation meddled in the election.
Saying that you accept the findings of the intelligence community but that "other people" might have been involved is like saying you accept that the world is round but you also worry about sailing off the edge of the Earth.
"My administration will repeal any attempt to interfere in our elections", he said.
President Trump returned home from Helsinki Monday night to widespread outrage, with even staunch allies such as former House speaker Newt Gingrich - a Republican - publicly calling the news conference the "most serious mistake" of the Trump presidency.
Both parties called for Secretary of State Mike Pompeo and other officials to appear before Congress and tell exactly what happened during Trump's two-hour private session with Putin.
That last sentence was what he corrected Tuesday.
On Tuesday, the president said that he had meant to say "I don't see any reason why it wouldn't be; sort of a double negative", but ended up saying "would" instead of "wouldn't".
"If we do not do something, eventually this will result in the complete devaluation of Russia's nuclear potential", he said. "They're caught in between the moderate independents that they don't want to lose and their credibility and the Trump base, and it's a tough little niche to find at times because they know no matter what the president says and does, his base will be with him".
House Speaker Paul Ryan quickly condemned Trump's comments, though he did not name Trump. But Trump made clear he feels that any acknowledgement of Russia's election involvement would undermine the legitimacy of his election.
Standing alongside Putin in Helsinki, Trump told reporters he was not convinced it was Moscow.
He said he was willing to consider additional sanctions on Russian Federation and that Congress would make sure they were not able to "get away with (election meddling) again".
Mr Trump has come under fire in the days since the Helsinki summit, with even Republicans usually supportive of Mr Trump's policies piling on the pressure. He thanked Senator Rand Paul, one of the few prominent Republicans who have defended his performance at Monday's remarkable 46-minute joint news conference.
"Yes, I wanted him to win because he spoke of normalization of Russian-U.S. ties", Putin said.
"In one week, President Trump attacked our allies in North Atlantic Treaty Organisation and cozied up to Putin who funds and provides military support for hostile regimes in Syria and Iran - and represents an imminent threat to the freedom and independence of the Baltic states".