By DOD photo by Glenn Fawcett [Public domain], via Wikimedia Commons
Chief of Staff John Kelly and Nikki Haley were at odds for the time they worked together. Kelly was opposed to Haley being made a full member of the cabinet where she would sit in on National Security meetings. Haley remarks in her book that John Kelly ensured that no other UN Ambassador would have that level of power again. Despite spats like these Haley stated that she has no personal issue with Kelly.