The trial of Paul Manafort resumes Monday afternoon with Special Counsel Robert Mueller's prosecutors expected to focus less on the lifestyle of the former Trump campaign chairman and more on the financial machinations underpinning the bank fraud and tax charges.
Manafort and Gates were the first two people indicted in special counsel Robert Mueller's investigation into potential ties between Russian Federation and the Trump campaign.
Gates' testimony on the trial's sixth day was part of the prosecution's effort to prove that Manafort was responsible for financial maneuverings that he and other witnesses have testified include filing false tax returns and failing to report foreign bank accounts.
Laporta also said Manafort was copied on several emails she sent to Gates regarding her concerns - but she did not consider calling Manafort directly because it appeared he was largely aware of what was happening.
Manafort is charged with bank and tax fraud related to political consulting work he did in Ukraine.
Those admissions are likely to become a focal point for Mr Manafort's defense team when he is cross examined today.
Gates, who also served in a senior role in Trump's presidential campaign, said he repeatedly lied to hide the bank accounts and, at Manafort's direction, would classify money that came in as either a loan or income to reduce Manafort's tax burden.
While outside the scope of the trial, Mueller is also investigating whether Trump campaign members coordinated with Moscow, an allegation President Donald Trump denies.
Special counsel Robert Mueller is investigating whether any Trump aides colluded with an alleged Moscow plot to help elect him as U.S. president, and whether there was any obstruction of justice.
The jury has heard how Manafort made tens of millions of dollars for political work with pro-Russian politicians in Ukraine. When Robert Mueller began investigating Russian interference past year, Manafort's questionable lobbying work - the sort of activity that has historically rarely been investigated in Washington - was put under a microscope, exposing him and his associates.
Manafort's lawyers are expected to use the theft to try to undermine Gates' credibility as a witness.
The second week of the tax evasion and bank fraud trial of Paul Manafort kicked off Monday.
In questioning Laporta on Monday, a prosecutor asked her about a $10 million (£7.72 million) loan purportedly received by Manafort from Russian businessman Oleg Deripaska in 2006.
Since the trial started before US District Judge T.S. Ellis last Tuesday, Manafort's lawyers have kept their cross-examinations brief and at times refrained from attempting to rebut damaging testimony in detail.
As a sober Gates recited his testimony, Manafort reacted about the way you'd expect. Manafort attorney Kevin Downing will cross-examine Laporta, who is testifying under an immunity agreement because she feared prosecution for perjury or false statements.
After that, Gates sent her a document dated March 6, 2014, that purported to represent a $900,000 loan from a Cyprus entity, Telmar Limited, to Manafort's company.