There are lots of Native American reservations in AZ.
Arizona Dept. of Health or whatever the proper name is, employs people to ensure compliance with this law. In addition to the job, they are provided a vehicle to drive around and make sure buildings that admit the public display a non-smoking order sticker. Even if you, as a property owner or business owner, do not permit smoking, you must display THE STICKER. If you do not display the sticker, the employee will see that a fine, a daily fine, is imposed upon you, until you display the sticker. Then after a long and distinguished career as a sticker checker, the public servant is rewarded, I mean “earns”, a generous retirement for their service.