law country and the president isn't above the law -- mueller will have the same power of compulsion that he would have with any other witness who doesn't appear in front of a grand jury which is to call the u.s. marshal and ask them to deliver the witness for testimony. >> there's another legal twist in the stormy daniels scandal that's colliding with a lawsuit brought by donald trump's lawyer and, to some extent, the russia investigation. trump's personal lawyer michael cohen sued buzzfeed for defamation after it published the steel dossier that claimed in august of 2016 cohen attended a meeting in prague to "clean up the mess of reports involving russia." now lawyers for buzzfeed have sent this letter to ty cobb, the president's lawyer at the white house. the letter asks him to preserve all documents regarding cohen's work with the campaign and any documents cohen may have provided to special counsel robert mueller and congress as it relates to his libel lawsuit.