Although Papadopoulos confirmed that Mifsud told him Russians had "thousands of emails" involving Clinton, he claimed he hadn't yet joined the Trump campaign when they spoke. Mifsud's current whereabouts are unknown, and Papadopoulos has denied telling anyone else from the president's campaign about Mifsud's claims.
Judge Randolph D Moss said the sentence could have been higher but he sensed "genuine remorse" from Papadopolous.
During his sentencing hearing Papadopoulos said his case should serve as a warning to others.
Told the campaign's priority was to improve relations with Russian Federation, within weeks he made contact with a mysterious professor, Joseph Mifsud, who touted links to the Kremlin.
In addition, they said Mr. Papadopoulos did not provide "substantial assistance" and only came clean after he was confronted with his own e-mails, texts and other evidence.
Prosecutors wrote that those false statements, made during a January 2017 interview with federal investigators, caused the FBI to miss an opportunity to interview Mifsud while he was in the United States.
Papadopoulos served as a foreign policy adviser to President Trump's 2016 campaign, and was the first to plead guilty in the Mueller probe. With his constant cries of "fake news", Trump has "hindered this investigation more than George Papadopoulos ever did", Breen said. He participated in four proffer sessions, they say, and "was willing to answer any questions posed".
The FBI began investigating Russian's election interference after a tip that Papadopoulos had dished about his Russian connections to an Australian diplomat during a night of heavy drinking. In a court filing August 31, Papadopoulos's lawyers painted him as a political newcomer "eager to show his value to the campaign", and quickly got in over his head.
Speaking to Jake Tapper for an interview recorded before his guilty plea, but airing on Friday, Papadopoulos refused to rule out the possibility he ever informed the Trump team that he knew Russian Federation held the emails.
Papadopoulos was the first to plead guilty in Mueller's probe.
He has testified that senior members of the Trump campaign encouraged him during 2016 to build ties with Russian Federation, including after he told them that Moscow possessed - and could be willing to share - dirt on Trump's election rival Hillary Clinton.
The Trump campaign adviser who triggered the Russian Federation investigation will find out Friday whether he will be going to prison for lying to the FBI. More accurately, Papadopoulos hemmed and hawed, and finally settled on, "I might have, but I have no recollection of doing so".
"It's time to think about everything", Kiki Papadopoulos added. A spokeswoman for Sessions declined to comment after Papadopoulos's filing last week.
"We were hoping for no jail time but two weeks is OK", Maria Stamatopoulos said.