IO: I believe this particular subset of the visa/TSA etc issues has not been dealt with here before.
SoCal: I believe that TSA clearance is not required for ASES, so let's put that matter to one side. My question is whether a student visa is legally required, I have not been able to establish an answer to this. The US Immigration Service does not appear to have any channel for asking technical questions. If the answer is yes, a visa is required, than I have to find a school that is registered to deal with student visas - or else find a Canadian school that can give the FAA rating.