Though the president has publicly said he was eager to face questions from Mueller, his lawyers have been far more reluctant to make him available for an interview and have questioned whether Mueller has the right to ask him about actions that he is authorized, under the Constitution, to take as president. Giuliani's comments came just hours after Trump's Supreme Court nominee, Brett Kavanaugh, espoused a belief in an expansive view of executive powers and declined to say whether a president can be subpoenaed and forced to testify.