He said the proposal had been passed on to the Russians by Trump's national security advisor John Bolton.
Still, 72 percent of Americans said they were more likely to believe US intelligence agencies over Putin's claims that Russia didn't interfere in the election, the poll found, while 15 percent said they believed the Russian president.
The administration has released only vague information about matters that were discussed in a private one-on-one meeting between Putin and Trump and the White House said the only firm agreement brokered was to continue to have an open dialogue.
Graham: Trump Is "Confused" About Russian Meddling
However, although the president's overall approval rating did not appear to suffer from his performance at the press conference, just 26 percent of people questioned said they approved of Trump's handling of the U.S.'s relationship with Russian Federation, with a far greater 51 percent disapproving.
Trump offered no evidence for his claim that Russian Federation would look to help Democrats win in 2018 beyond claiming he has been tougher on Russian Federation than his predecessors. Trump's comments in the days since - he called Montenegro "very aggressive" - raised doubts about the U.S. commitment to defend alliance partners and maintain penalties on Russian Federation for its annexation of Crimea. Trump said he holds "both countries responsible" for Russia's interference in the 2016 USA presidential election because "we're all to blame".
But U.S. defense officials are aghast at the prospect of coordinating with Russian Federation in Syria, where Russian Federation and the U.S. are conducting two separate military campaigns.
Slutsky's comments came soon after media reports that a bipartisan group of senators was preparing a new act threatening Russian Federation with a new set of USA sanctions in case of its interference with any future American election.
At a joint press conference in Helsinki, Putin laughed at the accusation the Russian government had gathered material with which to blackmail Trump.
In a country where state media portrays Putin as a seemingly infallible leader, even some of his supporters were fretting that he may have made an error by appearing to demonstrably take Trump's side. Among Republicans who were polled, 51 percent said they think so.
Mr. Trump's job approval rating rose to 45% in a new Wall Street Journal/NBC News poll, the highest mark of his presidency and up 1 percentage point from June. He states often that Russian meddling in USA elections is fake news.
On this question, independents lean more negatively than positively, with 22 percent saying America's leadership has gotten stronger under Trump, 47 percent weaker and about one-quarter saying it has stayed the same.
Whitman, who also served as former President George W. Bush's EPA administrator, continued by pointing out Trump's lack of credibility.