In a Facebook news conference Tuesday, Navajo Nation President Buu Nygren announced he removed Vice President Richelle Montoya of her responsibilities and called on her to resign. “I continue to ask the Vice President to submit to me her daily …In a Facebook news conference Tuesday, Navajo Nation President Buu Nygren announced he removed Vice President Richelle Montoya of her responsibilities and called on her to resign. “I continue to ask the Vice President to submit to me her daily …