Then speaking directly to Papadopoulos, Moss said: "I know the sentence is painful to you".
The punishment was far less than the maximum six-month sentence sought by the government but also more than the probation that Papadopoulos and his lawyers had asked for.
Papadopoulos' conversations with Mifsud were not related to seeking dirt on Clinton, the lawyers said, but an effort to broker a meeting between Trump and Russian President Vladimir Putin.
Prosecutors working for special counsel Robert S Mueller III had asked the judge to sentence Papadopoulos to six months in prison, saying his false statements "were meant to harm the investigation, and did so".
Andrew Goldstein, a prosecutor on Mueller's team, told the judge that because Papadopoulos lied, investigators were forced into a painstaking monthslong examination of 100,000 emails and other communications to establish how Russian intermediaries tried to use him as a channel to the Trump campaign.
Moss said he gave Papadopoulos 14 days because he researched how many defendants with this type of charge resulted in prison time - and it was fewer than half. "A great day for America!" the president tweeted.
After being tipped off by an Australian diplomat that Papadopoulos had spoken about Russians having dirt on Clinton, the Federal Bureau of Investigation quietly opened a probe into whether people in Trump's campaign were colluding with Russia.
The 31-year-old Chicago native was a little-experienced petroleum analyst based in London when he joined the Trump campaign in March 2016 as one of a handful of members of the Republican candidate's national security and foreign policy advisory board.
George Papadopoulos, a foreign-policy adviser to Donald Trump's 2016 campaign, was sentenced to 14 days in jail for lying to investigators about his contacts with a United Kingdom professor peddling dirt from Russian officials about Hillary Clinton.
Papadopoulos pleaded guilty in October to lying to the Federal Bureau of Investigation about meetings with individuals closely associated with the Russian government during the campaign. Told by the professor, Joseph Mifsud, that a Russian operative was "Putin's niece", Papadopoulos credulously repeated that assertion in an email to Trump campaign officials, prosecutors said. They are cooperating with investigators and await sentencing.
Weeks later, stolen Clinton emails were leaked over the internet by what USA intelligence chiefs now say were Russian intelligence actors.
In response, defense lawyer Thomas Breen said his client was "remorseful" that his lies impeded the investigation. 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. Van Der Zwaan pleaded guilty to lying to the FBI in February and admitted to hiding his communications with Manafort's team in 2016 from federal investigators.
Breen described his client as a "patriot", who wasn't trying to help Russian Federation.
Trump and his allies have repeatedly downplayed Papadopoulos' role on the campaign, with one of them describing him as a mere "coffee boy".
Mr. Papadopoulos was pictured in March, 2016, sitting at a table with Mr. Trump, then-campaign adviser Jeff Sessions who went on to become U.S. Attorney-Ggeneral, and other foreign policy campaign advisers.