Meanwhile, former Trump campaign manager Paul Manafort continues to be under house arrest.
In October, the Office of Special Counsel Robert Mueller announced that Manafort and Gates were indicted on 12 counts, including for failing to register under the Foreign Agents Registration Act of 1938 for their work for the Ukrainian government.
The indictments came as part of Mueller's investigation into the Trump campaign, Russia and the 2016 US election.
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