Navajo Nation President Buu Nygren announced the COVID-19 mask mandate has been lifted. The nation had been under the mandate for 1,007 days dating back to April 2020.The new guidance went into effect at 5 p.m. Friday.President Nygren made the announcement …Navajo Nation President Buu Nygren announced the COVID-19 mask mandate has been lifted. The nation had been under the mandate for 1,007 days dating back to April 2020.The new guidance went into effect at 5 p.m. Friday.President Nygren made the announcement …