[Political Junkie Too]

But... the article says the "Feds" are " encouraging this," which makes it federal. Also, what if it is being implemented on the interstate highway system?

-PJ

[Myrddin]

The interstate highway system is maintained by each state within its own borders. Stretches of highway that pass through a city or town are subject to local law enforcement within the boundaries of the county or city

Anecdotal example: an FFL in Idaho Falls had just acquired a new NFA firearm and wanted deliver it to an FFL in Pocatello. The Bannock Tribal police set up a roadblock in highway 19 and I-15 to prevent him from making the trip. They eventually relented and allowed him to pass. No explanation for the cause of that pissing match, but the tribal police did have jurisdiction on I-15 where it passes through the Shoshone-Bannock Reservation.