Article snippet: MORE in January, arguing that the president could not have possibly obstructed justice because he has constitutional authority over all federal investigations. The letter, which was obtained by The New York Times, argues that the Constitution gives Trump the broad authority to, "if he wished, terminate the inquiry, or even exercise his power to pardon." The 20-page memo also says Trump is not required to sit for an interview with investigators. Mueller's team has sought for months to negotiate an interview with Trump. Mueller has told Trump's lawyers that investigators need to speak with the president to determine whether he sought to obstruct the probe into Russian meddling in the 2016 election. But Trump's lawyers have been reluctant to grant such an interview out of concern that prosecutors could use the president's words against him. That has raised the prospect of investigators subpoenaing Trump. Mueller floated that possibility to John Dowd, one of Trump's former lawyers, in March, the Times reported. And Trump's legal team is preparing for that possibility, Rudy Giuliani, one of the president's lawyers, said. The letter, which was authored by Dowd and Jay Sekulow, another one of Trump's attorneys, takes a broad interpretation of the president's constitutional authority. That authority could be tested in a potential legal battle over whether Trump could be subpoenaed. The Times was the first to report on the letter's existence, although Trump appear... Link to the full article to read more