"It will come out", he said.
In testimony before the Senate in June, Sessions said he did not "recall" any meetings between campaign associates and Russian officials.
Trump was also non-committal in response to a question about whether he would fire attorney-general Jeff Sessions, who he has criticised for appointing special counsel Robert Mueller to investigate potential collusion between Trump campaign officials and Russian efforts to manipulate the outcome of the 2016 presidential election.
The development comes days after Trump's former campaign chairman Paul Manafort and an associate were placed under house arrest on money-laundering charges linked to an investigation by special counsel Robert Mueller into allegations that the campaign colluded with Russian Federation.
After the trip, the foreign policy adviser sent an email to at least one Trump campaign aide.
Sessions made similar denials in two subsequent hearings before Congress on Russian Federation since taking office. "I changed my travel plans to go to Russian Federation'". The Minnesota Democrat said the latest disclosure suggests that the American people "cannot trust your word".
But he downplayed the significance of the meetings, telling the Times he had "a very brief hello to a couple of people".
The email went to "several members of the campaign's foreign policy team", according to the documents.
Court documents said Clovis told Papadopoulos: "Great work".
Nonetheless, the court filing on Papadopoulos is now being contrasted with long-disputed answers Sessions gave the Senate Judiciary Committee at his confirmation hearing about Trump's campaign, including the exchange with Franken.
"He heard him out", JD Gordon, a campaign national security adviser who attended the March 31, 2016 meeting, told CNN Thursday.
"He needs to clarify his testimony before our committee", said Judiciary Committee member Sen.
Sessions has been dogged over his testimony before Congress about interactions with Russians during the 2016 presidential campaign.
While Democrats made clear that the Papadopoulos revelations raise new questions about whether Sessions told the truth to Congress, there was little indication they'd pursue the politically and legally uncertain possibility that the nation's top law enforcement official could be prosecuted for perjury.
In his traditional Friday appearance on Shepard Smith Reporting, Wallace noted that a new Attorney General might be inclined to get involved in the Russian Federation probe, which Sessions has recused himself from.