http://www.truth-out.org/news/item/43373-sometimes-white-house-staff-have-a-legal-duty-to-disobey-the-president
"Last June, Donald Trump ordered White House Counsel Don McGahn to fire Special Counsel Robert Mueller, according to the New York Times. McGahn threatened to resign rather than fire Mueller, so Trump backed down. Trump had given McGahn an illegal order. The president was asking the White House Counsel to conspire with him to obstruct justice. McGahn knew he had a legal duty to refuse an illegal order, even if it was the president doing the ordering."
