The indigenous Native American population was decimated by the normal European diseases like measles, mumps, chicken pox and etc that they had no immunity to.
So today they are a bit worried about infectious diseases.
Indian reservations are separate nations inside of America.
They can do as they like...but the Governor of South Dakota doesn't want any quarantine...and has refused to negotiate as ordered with the Sioux.
Not always .
I'm familiar with this stuff ,in,my state they have limited autonomy ,the state allows them to have casinos ,I,highly,doubt they can search without probable cause .
The Sioux surrendered,the Seminole have no, piece treaty with the u.s, only,an agreement .the Seminole also didn't surrender at all.just stopped the warring and were left to be ,old Florida photos of them exist in my county walking to town and shopping .
This varies by state .
Also once this is allowed kindly justify why a govt can't simply,have you,carry a card .force you to be free of any contagions.that could and are curable and do kill.
The various flu,tb,hep,a,b,c.and others .I,get the travel issues to third world nations .a hospital in Michigan closed over this.
Oh I add malaria ,west Nile virus ,any mosquito born disease.we would also have to screen immigrants .the homeless,can't ignore them.
If you think that people are ignorant on,how nuclear ,biolpgical ,chemical containment is.ponder this.if you aren't cleaning anything and everything you,touch outside of your home .its pointless .
Wearing a glove and you don't remove it after each touching of various items ,cross contamination