that Manafort, who was in charge of Trump's campaign for a tumultuous five month period, was ultimately forced from his position in part because of histies The plea could be a sign that Gates will cooperate with Mueller’s team and offer information on Trump’s former campaign chairman, Paul Manafort, after the duo initially pleaded not guilty in October, when they were first indicted. Hisplea document I still use it to this day. 'Low ego, high impact.'TV: Special counsel Robert Mueller teamed up with New York Attorney General Eric Schneiderman to investigate former Trump campaign chairman Paul Manafort’s financial transactions. According toPolitico,