Robert Mueller Leah Millis/Reuters Former special counsel Robert Mueller's team was acutely aware that the "third act in this play would be an inevitable investigation of us, by the Trump administration, when our investigation was complete," Andrew Weissmann, a former prosecutor who worked on Mueller's team, wrote in his new book. The jokes "took on a darker hue" ahead of the November 2018 midterms, when another prosecutor in Mueller's office, Jeannie Rhee, said that if Republicans "retain the House, we all need to retain criminal lawyers.