In response to these charges, Manafort claimed that he could not be prosecuted by Special Counsel Robert Mueller because the particular charges against him are outside of Mueller's properly delegated authority.
USA district judge Amy Jackson declined to throw out the case against Manafort, who faces two indictments from the special counsel.
Having failed to bring a swift conclusion to the probe into Russian interference in the 2016 election and possible collusion with the Trump campaign as he initially predicted, Giuliani said Tuesday that the legal team will step up their efforts leading up to the one-year anniversary of the investigation on Thursday.
A United States judge rejected former Trump campaign manager Paul Manafort's motion to dismiss charges that arose in the Russian Federation investigation conducted by Special Counsel Robert Mueller, according to court documents.
Manafort and his lawyer's had argued Rosenstein acted improperly by appointing Mueller to investigate collusion with Russian Federation and "any matters that arose or may arise directly from the investigation".
Following the release of Jackson's opinion, Jason Maloni, a spokesman for Manafort, said, "Paul Manafort maintains his innocence and looks forward to prevailing in this matter". "The management of the investigation into the allegations against Manafort has been consistent with the objectives and requirements of the set of regulations as a whole, as well as the terms of the individual regulation upon which the defendant relies", said Jackson, a 2011 Obama appointee.
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And regardless, she wrote, it was clear that Mueller had been specifically authorised to investigate not only Manafort's possible links to Russian Federation but also his Ukrainian business. And Deputy Attorney General Rod Rosenstein was acting within his authority to broadly define the special counsel's authority, she said.
"Who had connections to the Russian government?"
To be clear, nothing in Jackson's decision is especially surprising - Manafort's challenge to Mueller's authority was always a long shot that was unlikely to prevail. In Virginia, he faces charges that include bank fraud and filing false tax returns. It also accuses him of fraudulently obtaining millions in loans from financial institutions including while he worked for the Trump campaign.
It has pleaded not guilty to the charges, and its lawyers are due to appear in a federal courthouse for a status hearing Wednesday.
Manafort has filed a similar motion to dismiss his charges in Virginia.