Relevant section of the constitution. Don’t know if this would fall under inspection:
> No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing it's inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Controul of the Congress.
SCOTUS has ruled that, with specific and compelling reasons, states can implement these kinds of interstate restrictions. If Congress wanted to, they could pass a federal law that would pre-empt the state law, but has not done so.
it would also mean that the FedGov would have to evaluate or interact with every sort of intra-state interaction, which would get onerous and expensive quickly.
> FedGov would have to evaluate or interact with every sort of intra-state interaction
I don't think that's the case. It would be up to Congress. They have the authority to pass a law that says: "No state may put up any intra-state barriers to commerce at all", and that would be that.
Or they could choose to pass a law that's a lot more specific, in which case they would need to deal with each intra-state interaction.
It says right there they can do what is needed to execute inspection laws. They just can't charge you to import. California had serious problems with Mediterranean fruit flies destroying crops from the 50s onward, which is why they started doing this.
Yeah, just encountered those on a road trip and wondered how they were legal. Was right on the Cali/Oregon border for a couple of days and those checkpoints were also only sporadicly staffed, so I don't understand the point anyways.
> No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing it's inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Controul of the Congress.