Tom: Basically the Supreme Court rules that 4th ammendment doesn't apply to searches that a custom offical does when you come back to the US, because you aren't in the US yet.
Me: So where am I?
Tom:... want do you mean?
Me: If I'm not in the US yet, then I have to be "somewhere." What is that somewhere? Are there laws? There obviously aren't US laws, becase the Courts ruled I'm not in the US yet. Can I just punch the customs offical in the face?
Tom:... I don't recommend punching the customs offical in the face unless you want to be handcuffed to a hospital bed for 3 days getting a chemical enema.
Me: Maybe this whole time everyone thinks there's order in the duty free zones, but its really anarcy. It's like a collective hallucination.
Tom: Thats a good point, what's to keep me going into the duty free store and start stealing stuff?
Conclusion: The customs office is a Temporary Autonomous Zone