On Thursday they told the appellate judges that Manafort also should be released because no one has accused him of physically threatening potential witnesses with any violence.
Mueller's team dismissed that argument. Coaching witnesses to lie to federal investigators, they wrote, 'is no less damaging to the justice system when committed through covert corrupt persuasion than through overt violence.'
Manafort has pleaded not guilty to all the charges against him in both the Virginia and Washington, D.C. federal circuit courts.
His pre-trial incarceration, however, could be a hard-sell method of persuading him to cooperate with Mueller's lengthy investigation into unproven links between Trump's campaign and agents of the Kremlin.
All the charges against the former Trump campaign chairman stem from his work for the Ukrainian government long before the president entered the White House race.
Manafort is listed as a 'VIP' inmate at the Northern Neck jail.
The rural Virginia facility is the same one that housed former NFL star Michael Vick after his conviction for dogfighting. Singer Chris Brown also spent time there.
Manafort's first trial, scheduled to begin July 25 in Virginia, focuses on bank fraud and tax evasion.
On Sept. 17 he will face a second case in Washington, D.C., wrapping up all the other charges
