Paul Manafort <br />Pleads Guilty, Will Cooperate <br />With Special Counsel Mueller President Donald <br />Trump's former <br />campaign chairman Manafort will also <br />cooperate with Mueller <br />and his team of prosecutors. Manafort cooperation agreement, via NBC News Mueller's team is <br />investigating <br />possible collusion The first trial <br />against Manafort <br />was a victory Jury selection for <br />Manafort's second <br />trial was to begin Monday. Now that Manafort has plead guilty, a charging document will replace what may have been an indictment. The charges against Manafort include conspiracy involving money laundering, Statement, Robert Mueller's office, <br />via CNBC It's considered a significant blow <br />to President Trump that Manafort has decided<br />to become a witness for Mueller's investigation. Trump has <br />consistently <br />referred to