That reply put the president sharply at odds with recent public warnings from his own intelligence chief, but the White House quickly stepped in to say his answer wasn't what it appeared.
The president told a television interview that he has "tremendous faith" in Dan Coats, director of national intelligence, and that he would "accept" his conclusions on Russian involvement.
Later Wednesday, press secretary Sarah Sanders claimed that when the president answered "no", he was saying he couldn't answer questions and not actually saying "no" to the question about Russian targeting.
But Mrs Sanders rejected that interpretation later in a news briefing, telling reporters the White House was taking action to prevent any future meddling.
"The president has made clear to Vladimir Putin that he should stay out of USA elections", Ms Sanders said.
After Donald Trump faced a slew of criticism for apparently siding with Vladimir Putin during a press conference in Helsinki, the U.S. leader added a new element to his account of the summit on Wednesday.
Meanwhile, Mr Putin has weighed into the controversy calling his first summit with Mr Trump a success - but warned on Thursday that Mr Trump's opponents in the U.S. were hampering any progress on what they discussed, such as limiting their nuclear arsenals or ending the Syrian war. "He understands it, and he's not happy about it".
Browder pointed out that Trump's dialogue with Putin over the "Magnitsky Act" was the same idea discussed by a Russian lawyer in the dubious 2016 Trump Tower meeting with Donald Trump Jr.
Democrats and some members of Trump's own Republican Party have criticized him for accepting at face value Putin's denial that Russian Federation interfered in the vote.
"So many people at the higher ends of intelligence loved my press conference performance in Helsinki", Trump tweeted.
The two presidents held a two-hour closed-door negotiation with no other officials present save for the leaders' interpreters.
He said then that he "briefed President Trump about these allegations earlier this week. The fact that they want to question 11 American citizens and the assertions that the Russian government is making. we do not stand by those assertions". I want to focus on how we're going to ratchet down tensions.
"You can't establish this precedent", McFaul said.
Trump ally Sen. Lindsey Graham, R-South Carolina, also responded to the initial report, telling reporters that "everything I've seen from the intelligence community suggests Russian Federation is interfering with the 2018 election".
The White House is likely to block the move, arguing that the president is not required to reveal private conversations and that an aide, such as a translator, should not be compelled to do so. "But no one expected that", Putin said.
It comes just days after Trump and Putin met in Helsinki for their first official summit on Monday.
"The way he delivered his statement of retreat was classic Trump, a dual message - a ritual statement of confidence in US intelligence officials for those who insist that the president respect the nation's systems and mores, but also winks and nods to those who like Trump expressly because he's eager to smash china and topple tradition".
"The sentence should have been: "I don't see any reason why I wouldn't" or "why it wouldn't be Russia". First of all, Robert Mueller is not interested in sitting in a room while Russian police officers interview Russian spies about election hacking. "I have President Putin, he just said it's not Russian Federation".