The testimony from James Brennan, a vice president at Federal Savings Bank whose chairman allegedly sought a role in the Trump campaign, represented the capstone to the prosecution's case that has featured 28 witnesses over 10 days here.
Manafort, who has watched silently as the case against him was argued in federal court, was asked by Judge T.S. Ellis whether he wanted to testify in his own defense.
Manafort's lawyer, Kevin Downing, rested his case Tuesday morning.
The Mueller team has spent the past couple of weeks been bringing in a parade of witnesses to testify against Manafort, including former partner Rick Gates, who admitted that he and Manafort committed crimes together.
Manafort is being tried on 18 counts, which include tax and bank fraud charges, as well the failure to disclose foreign bank accounts.
Manafort, 69, is facing tax evasion and bank fraud charges after being accused of hiding a "significant percentage" of income earned from his Ukrainian work from the IRS.
Gates, Manafort's right-hand man, was the government's star witness, while Manafort's lawyers have put attacking his credibility at the heart of their defense.
Manafort, through his political consulting firms (first, Davis Manafort Partners, then DMP International), controlled 32 foreign bank accounts in Cyprus, St. Vincent and the Grenadines, and the United Kingdom, set up by Cypriot lawyer Kypros Chrysostomides, referred to in court as "Dr. K" due to his name's hard pronunciation and spelling for non-Greek speakers.
Television cameras are set outside of federal court as the trial of former Trump campaign chairman Paul Manafort continues, in Alexandria, Va., Monday, Aug. 13, 2018.
US prosecutors on Monday rested their case against Manafort after 10 days of testimony.
U.S. District Judge Dabney Friedrich, a 2017 appointee of President Donald Trump to the District Court for the District of Columbia, was the latest trial-level judge - including ones appointed by Republican and Democratic presidents - to cast doubt on arguments advanced by conservative legal thinkers, led by Northwestern University law professor Steven Calabresi, about the validity of Mueller's appointment. Neither Manafort nor Gates have been charged in connection with their Trump campaign work.
Last week, jurors heard testimony that Calk approved the loans as he sought Manafort's help in getting a high-ranking position in the Trump administration. Gates struck a plea deal with prosecutors and provided much of the drama of the trial so far.
"The government rests", United States prosecutor Greg Andres said after the agent completed her testimony. The defense also pushed Gates to address allegations that he embezzled "several hundred thousand" dollars from Manafort to finance an apartment in London where Gates had an extra-marital affair.
But Brennan said Federal Savings Bank chairman Stephen Calk overruled that decision.
Calk and Federal Savings Bank did not respond to USA TODAY's request for comment on Brennan's testimony. Ellis took the motion under advisement.
Ellis eventually made changes that appeased the prosecution, but the back and forth highlighted the tense relationship between the government and Ellis throughout the trial.
It was unclear if Ellis will make public the reason behind an unexpected recess on Friday that lasted into the midafternoon and included a lengthy discussion with the lawyers and judge at the bench, the contents of which remain under seal.
Also Tuesday, Ellis rejected a defense motion that the case should be dismissed on those same grounds.