No idea what that BIA letter means referring to "individual's constitutional rights."
Idiots.
I gave you the short, definitive statement on the matter
Ball is in the tribe's court - to contact the state for a meeting.
Incorrect. With all due respect, your knowledge of this topic is minimal. The tribe has been in constant contact with the state, and even had some assistance from them in how to set up checkpoints along US 212, and elsewhere. It's the BIA,
a federal agency, that has tossed a wrench in the process and asserted a federal right-of-way that neither Cheyenne nor Sioux, as sovereign people, have ever granted. Noem took this BIA interference as her cue to start pounding on her shield.
Before further uninformed remarks emanate from you, I'd also advise learning what's going on in the Navajo nation, in the three states in the SW, and why their CV19 rate is near that of NY and NJ.