It comes ten months after Papadopoulos pleaded guilty to lying to the Federal Bureau of Investigations (FBI), which at the time was leading the probe into allegations that Russian Federation interfered in the 2016 USA presidential elections.
Papadopoulos' attorneys said in court papers their client is "ashamed and remorseful", but they insisted his lies did not harm the Russian Federation investigation.
"The defendant's lies undermined investigators' ability to challenge the Professor or potentially detain or arrest him while he was still in the United States", they wrote, noting that Mifsud left the U.S. in February 2017 and hasn't returned.
Lawyers for Mr. Papadopoulos dispute some of the government's characterizations, and they asked the judge to sentence him to probation. 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.
"The President of the United States hindered this investigation more than George Papadopoulos ever did", Breen said.
Moss also said he thought it was important that his sentence send the public a message about the gravity of misleading and, "telling lies to the Federal Bureau of Investigation on matters of grave importance to the nation".
Papadopolous will also have 12 months of supervised release, serve 200 hours of community service within about a year and will be fined $9,500.
Speaking to reporters aboard Air Force One on Friday afternoon, Trump distanced himself from Papadopoulos.
Breen said his client's primary interest was brokering a meeting between Trump and Putin, a move he believed the campaign supported.
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In addition, they said Papadopoulos did not provide "substantial assistance" and only came clean after he was confronted with his own emails, texts and other evidence.
Far from cooperating to energize the special counsel probe, prosecutors Jeannie Rhee, Andrew Goldstein and Aaron Zelinsky argued, Papadopoulos and his wife gave life to a false narrative about them and the seriousness of his offense.
In this photo from President Donald Trump's Twitter account, George Papadopoulos, third from left, sits at a table with then-candidate Trump and others at what is labeled at a national security meeting in Washington that was posted on March 31, 2016.
Federal Bureau of Investigation agents interviewed Papadopoulos in January 2017, and he lied about his April 2016 conversation with Joseph Mifsud, a Maltese professor working in London who had ties to Russian officials.
"I see Papadopoulos today, I don't know Papadopoulos, I don't know".
CNN's Tapper noted that Session's attorneys said that Sessions stands by his testimony, and denied encouraging a meeting with Russians. Sessions told a Congress hearing he had "pushed back" against the idea.
"While some in the room rebuffed George's offer, Mr Trump nodded with approval and deferred to Mr Sessions, who appeared to like the idea and stated that the campaign should look into it", they said in a sentencing memorandum, which requested probation for Papadopoulos.
"We don't talk politics", he said. In court papers filed ahead of the sentencing, prosecutors say those lies caused irreparable harm to the investigation during its early months.