In addition to Leahy and Blumenthal, Senators Al Franken (Minn.) and Chuck Schumer (NY) are calling for the attorney general to testify.
Thursday's developmenst came as multiple Trump campaign officials were being investigated by Special Counsel Robert Mueller over alleged links to Russian Federation and an alleged concerted effort to collude with Moscow in influencing the 2016 us presidential election.
The plea agreement contained the clearest evidence yet of a connection with the Kremlin's election-meddling effort and the Trump campaign.
Sessions is under pressure from Senate Democrats to testify again about the Trump campaign's Russian Federation contacts.More news: Bitcoin surges past $7000 to reach all-time high
"He seems to have problems telling the truth on this subject", Franken said of Sessions.
"I certainly think it's a legitimate area of inquiry" for congressional investigators to pursue, Cornyn told CNN.
Both Papadopoulos' and Page's statements appear to cast doubt on comments made by Sessions to the Senate multiple times since his confirmation hearing in early January, as well as remarks made by the president.
Sessions replied, "I have not seen anything that would indicate collusion with Russians to impact the campaign". "I am deeply troubled that this newest revelation strongly suggests that the Senate-and the American public-cannot trust your word".More news: Papa John's says anthem protests are hurting deal with NFL
Democrats on the Senate intelligence and judiciary committees are interested in formally asking Sessions to clarify his testimony, according to a Senate aide.
"He now needs to come back before the Committee, in person, under oath, to explain why he can not seem to provide truthful, complete answers to these important and relevant questions", Leahy, a former chairman of the Judiciary Committee, told The New York Times.
Papadopoulos, 30, attended a meeting with then-candidate Trump and members of his campaign team at which he offered to set up a meeting between Trump and Russian President Vladimir Putin, according to a court filing. Revelations that the attorney general was previously in a meeting with former Trump campaign aide George Papadopoulos and was told about Page's trips to Russian Federation have been raised by lawmakers as a subject of further inquiry.
The Justice Department did not immediately respond to a request for comment Thursday evening. White House press secretary Sarah Huckabee Sanders said Monday that he held an "extremely limited" role in the campaign and described him as a "volunteer" that did nothing in an "official capacity".More news: Buhari hosts Tinubu in Aso Rock
President Trump wrote on Twitter this week that there was "NO COLLUSION" between his campaign and Russian Federation and said the case filed against Mueller centered on acts that occurred "years ago", well before Manafort got involved with his campaign.
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