(Mandel Ngan | Pool via AP) Navajo Nation President Jonathan Nez speaks in Window Rock, Ariz., on Thursday, April 22, 2021. “A lot of the new cases we are seeing on the Navajo Nation are due to family and social gatherings where people let their guard down …(Mandel Ngan | Pool via AP) Navajo Nation President Jonathan Nez speaks in Window Rock, Ariz., on Thursday, April 22, 2021. “A lot of the new cases we are seeing on the Navajo Nation are due to family and social gatherings where people let their guard down …