Ultimately, jurors found Manafort guilty of eight of the 18 charges he faced: two counts of bank fraud, five counts of tax fraud and one count of failing to declare a foreign bank account.
In a 17-page court filing submitted late Tuesday to the U.S. District Court in Virginia, Mueller pushed back against Manafort's assertion that he has accepted responsibility for his crimes and deserves a reduced sentence, arguing that the longtime Republican consultant shows a "lack of remorse".
"To say I am humiliated and shamed would be a gross understatement", he added, asking Judge TS Ellis to be "compassionate".
Before the sentence was handed down, Manafort asked the judge for compassion.
Manafort's lawyers also noted their client admitted he was guilty of the other 10 charges of fraud that resulted in a hung jury in his Virginia trial and that he agreed to cooperate with Mueller's investigation as part of a plea deal to avoid a second trial on separate charges brought by Mueller in the District of Columbia.
Manafort, who has been dealing with health issues, looked unwell as he entered the courtroom in a wheelchair.
The government says Manafort's misconduct involved more than $16 million in unreported income, more than $55 million hidden in foreign bank accounts and more than $25 million secured through lies to banks. Even Ellis at the outset of the case speculated that prosecutors' true motive in prosecuting Manafort was to pressure him to provide evidence against Trump.
"The real essence of his violation is that he stole from us, the people who pay their taxes", Ellis said of Manafort.
"The cases that the special counsel have brought against Mr. Manafort have devastated him personally, professionally and financially", they wrote in a March 1 filing.
Rep. Ilhan Omar in trouble with fellow Democrats in Washington
Eliot Engel D-N.Y., speaks during the House Foreign Affairs subcommittee hearing on February 13 at Capitol Hill in Washington. Omar has received bipartisan criticism for her comments at a town hall event with fellow pro-Palestinian advocate Rep.
Manafort, 69, is being sentenced for bank and tax fraud, just days before he is set to be sentenced for related conspiracy charges in a case in D.C. federal court. Ellis dismissed efforts by Manafort's defense team to justify a lesser sentence.
In reality, they said, he was under Justice Department investigation before Mueller was appointed special counsel in May 2017.
Manafort's team accused Mueller of attempting to "vilify Mr. Manafort as a lifelong and irredeemable felon", saying investigators' actions were "beyond the pale" and "grossly" overstated the facts of the case.
"Thank you for a fair trial", Manafort said.
Trump's former personal attorney Michael Cohen is to begin serving a three-year prison sentence on May 6 for fraud, tax evasion, illegal campaign contributions and lying to Congress.
The verdict marked a dramatic fall for Manafort, a savvy political operative who advised USA presidents as well as foreign leaders.
The crimes for Manafort was convicted did not directly relate to the 2016 election.
The charges against Manafort were not connected to his role in the Trump campaign, which he headed for two months in 2016, but were related to lucrative consulting work he did for Ukrainian politicians from 2004 to 2014.
For their part, Manafort's lawyers seek mercy for a man once considered one of America's premier political consultants, advising four US presidents and working around the world.