https://www.commondreams.org/news/2017/12/04/channeling-nixon-trump-lawyer-argues-its-not-obstruction-when-president-does-it
"President Donald Trump sparked fresh accusations of obstruction of justice over the weekend with a tweet indicating that he knew former White House national security adviser Michael Flynn lied to the FBI—but, according to the president's personal lawyer John Dowd, Trump can't possibly obstruct justice because...he's the president."