WINDOW ROCK, Ariz. — Navajo Nation President Buu Van Nygren was not coy about his intention to lift the COVID-19 mask mandates on the Navajo Nation once elected. This was one of the campaign promises that he made for his first 100 days. He’s kept that …WINDOW ROCK, Ariz. — Navajo Nation President Buu Van Nygren was not coy about his intention to lift the COVID-19 mask mandates on the Navajo Nation once elected. This was one of the campaign promises that he made for his first 100 days. He’s kept that …