Frank,
First of all, a magazine is not an inherently dangerous item, like fireworks, volatile chemicals, or flammable objects.
The laws in California refer to manufacture, importation, and possession within the state (if you read them differently, please explain why). An out-of-state seller would not be subject to any of those restrictions unless they set foot in California.
Under the definition at your link, it says "This concept was expanded by the Supreme Court in Int'l Shoe Co. v. Wash., 326 U.S. 310, 316 (U.S. 1945) where it held that in order to subject a defendant to a judgment in personam, due process required the defendant to have "certain minimum contacts" with the forum, and that such jurisdiction may not offend "traditional notions of fair play and substantial justice."
A single transaction would likely not meet the "certain minimum contacts" standard, and most certainly would offend "traditional notions of fair play and substantial justice."
If the laws said that it was illegal to "ship into" California, MAYBE they'd have an avenue toward prosecution of the seller, especially if they were in the habit of doing so. As the laws are written now, I think the seller in a one-time transaction would have nothing to fear.
mbogo
