Roger Stone, a staunch ally of President Donald Trump, faces sentencing Thursday on his convictions for witness tampering and lying to Congress.
The action in federal court comes amid Trump's unrelenting defense of his longtime confidant that has led to a mini-revolt inside the Justice Department and allegations the president has interfered in the case.
Trump took to Twitter to denounce as a miscarriage of justice the initial recommendation by Justice Department prosecutors that Stone receive at least seven years in prison.
Attorney General William Barr then backed off that recommendation, prompting four prosecutors to quit Stone's case.
Stone was convicted in November on a seven-count indictment that accused him of lying to Congress, tampering with a witness and obstructing the House investigation into whether the Trump campaign coordinated with Russia to tip the 2016 election.
He was the sixth Trump aide or adviser to be convicted of charges brought as part of special counsel Robert Mueller's Russia investigation.
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Any jail sentence seems likely to draw a public rebuke from Trump, who maintains that Stone's entire case is just an aspect of the ongoing witch hunt against him and his allies by bitter Democrats and the deep state inside the FBI and the Justice Department.
Given Trump's recent clemency spree that saw him commute the sentence of former Illinois Gov. Rod Blagojevich, there has also been speculation that Trump could eventually pardon Stone.
I haven't given it any thought ... but I think he's been treated very unfairly, Trump said this week.
In Stone's initial sentencing memorandum filed February 10, prosecutors said Stone deserved a prison term lasting seven to nine years, in accordance with federal sentencing guidelines.
Such a sentence would send a message to deter others who might consider lying or obstructing a congressional probe or tampering with witnesses, the prosecutors said.
Stone, 67, has denied wrongdoing and consistently criticised the case against him as politically motivated.
He did not take the stand during his trial and his lawyers did not call any witnesses in his defense.
Stone's defense team requested a new trial and had asked Judge Amy Berman Jackson to delay sentencing until she rules on that motion. Earlier this week she refused.
Prosecutors had charged in the filing that Stone decided to double- and triple-down on his criminal conduct by tampering with a witness for months in order to make sure his obstruction would be successful.
Stone's actions were not a one-off mistake in judgment. Nor were his false statements made in the heat of the moment. They were nowhere close to that, prosecutors wrote in the court papers.
But Justice Department officials said they were caught off guard by the recommendation, even though the acting US Attorney in Washington, DC, Timothy Shea, is a former top aide to Barr.
The attorney general ordered a new memorandum with a less harsh punishment, though it left provided no specifics and left the details to the judge.
Barr's decision became public just hours after Trump, in an overnight tweet, called the situation horrible and very unfair.
He added: Cannot allow this miscarriage of justice! Barr later said in an ABC News interview that he had not been asked by Trump to look into the case.
In a stunning public rebuke, he said the president's tweets were making it impossible for him to do his job.
Meanwhile, Barr's actions on the sentencing for Stone prompted the entire trial team to quit.
The public debacle also prompted a rare statement from the Chief Judge of the DC District Court, Beryl A. Howell, who said public criticism or pressure is not a factor in judges' sentencing decisions.
The evidence presented in the trial didn't directly address Mueller's conclusion that there was insufficient evidence to prove a criminal conspiracy between the Trump campaign and Russia to tip the outcome of the 2016 presidential election in Trump's favour.
But it provided new insight into the scramble inside the Trump campaign when it was revealed in July 2016 that the anti-secrecy site WikiLeaks was in possession of more than 19,000 emails hacked from the servers of the Democratic National Committee.
Witnesses testified that Trump's campaign viewed Stone as an access point to WikiLeaks and tried to use him to get advance word about hacked emails damaging to Hillary Clinton.
Prosecutors argued that Stone had lied to Congress about his conversations about WikiLeaks with New York radio host and comedian Randy Credico.
During the 2016 campaign, Stone had mentioned in interviews and public appearances that he was in contact with founder Julian Assange through a trusted intermediary and hinted at inside knowledge of WikiLeaks' plans.
Testimony revealed that Stone, while appearing before the House Intelligence Committee, named Credico as his intermediary to Assange and pressured Credico not to contradict him.
After Credico was contacted by Congress, he reached out to Stone, who told him he should stonewall it and plead the fifth, he testified.
Credico also testified during Stone's trial that Stone repeatedly told him to do a 'Frank Pentangeli,' a reference to a character in The Godfather: Part II who lies before Congress.
Prosecutors also charged that Stone had threatened Credico's therapy dog, Bianca, saying he was going to take that dog away from you.