Because the short little SS-Oberst-Gruppenführer gubbner says so. She's calling out the National Guard to enforce the closure.
As usual the entire city will suffer because the problem as plain as her buckteeth is the Navajo tribal members, BUT instead of closing access to the city by reservation road, she shuts all the citizens in.
The Navajo President this week asked all reservation members to stay on the rez, which is ignored as they all need to shop. The navajos have closed the reservation completely for 4 weekends and have had a nightly curfew for 4 weeks, but the positive tests are still skyrocketing. The tribal closure affected rez land in 3 states without abating, but this fool of a guvner cannot see closures haven't worked and is screeching that "social distancing is not being done so I will force it". What a democrat putz.
How many are really getting sick and dying?.....yes I expect more deaths in the 60 on up crowd...
I think that a big element in this is the concurrent opening up of Grants by its Mayor. Grants and Gallup compete for the western limits I-40 trade and development money. I have been in both two dozen visits and like aspects of each. Gallup is the one with more poverty but has a huge NA veterans tradition.