Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

That sounds like a real PITA, and I truly hope some common sense work around is in place soon. Sending your SSN to most anyone is a bad idea, let alone out of the country. If you are paying through bank transfers, paypal or any form of credit card, that ought to be all the info anyone should need, and provides all traceability that any proper authority should need for tax purposes!