Under the US constitution, federally recognized tribes, such as the Navajo Nation and the Cherokee Nation, have self-governing authority, and so have been able to implement mask mandates despite the statewide bans.
Jason Dropik, board president of the National Indian Education Association and the head of the Indian community school in Wisconsin, said the majority of Native communities he had heard from in states with these bans have implemented mask mandates.
The reasoning, he explained, often had to do with the fact that Indigenous Americans have had to deal with a disproportionately high death toll from Covid. According to an analysis released in February, one in every 475 Native Americans has died since the pandemic started – a greater proportion of any other demographic in the country.
Source: Native American tribes enforce mask mandates regardless of state bans | Native Americans | The Guardian