That's not relevant. Th U.S. export restriction does not apply to language, ethnicity, country of origin, etc. It applies to _sending_ export restricted items to (in this case) Iran.
Any sale at a brick-and-mortar store in the U.S. does not constitute export. Apple, and the store are safe from legal liability.
edit - hmm, as pointed out elsewhere, there does seem to be some cases where selling to an individual is still restricted.
Sounds like everyone who has ever sold a computer needs a new way of moving their wares if this is really a concern. ;) That or, every sales rep needs to be trained to recognize Farsi and distinguish the Iranian dialects from the other places we don't have trade restrictions on.
A guide to the distinguishing characteristics of the Spanish spoken in Cuba should also be de rigueur for sales staff as well, lest an iPad slip into the hands of the Castros. I suppose that might be problematic in parts of Miami, but I guess you have to be willing to throw these kinds of freedoms under the bus to ensure that Cuban agents have absolutely no way to get their hands on our precious technology.
Yeah, wouldn't want the commies getting an edge over us in electronics production, no siree. Hey, it's a lucky thing that Apple's American, otherwise the Chinese might be able to get their hands on this kind of advanced doohickey, and then where would we be?.
