During the trial, Prosecutor Susan Hoffinger questioned Robert Costello about an email in which he appeared to discourage cooperation. Costello denied the accusation, stating that he was not encouraging non-cooperation. The email in question, dated June 14, 2018, expressed Costello's belief that Trump and Giuliani were not trying to discredit him, contrary to what he perceived as a narrative pushed by the left-wing media. The email advised the recipient to assert their position if they felt unsupported by their former boss and to communicate their desires clearly.
Further probing by Hoffinger revealed a question posed by Trump's attorney, Bove, regarding Costello's allegiance during dealings with Cohen. Costello affirmed that his primary obligation was to Michael Cohen, not to President Trump's interests. This response underscored Costello's commitment to his client over any other considerations.
