NEW: Stephen Miller pledges his “absolute loyalty” to President Trump in remarks from a private Mar-a-Lago event, following his appointment as White House chief

NEW: Stephen Miller pledges his “absolute loyalty” to President Trump in remarks from a private Mar-a-Lago event, following his appointment as White House chief of staff. “I swear to you, and I pledge to you, Mr. President, my absolute loyalty, my unwavering commitment, and my total devotion to you…