Re: I wonder what Tim Cook has to say
Since lawyers tend to be jurisdiction-bound (they can only practice where their license was issued, and these tend to be by state), client information probably doesn't travel with them.
But now that you mention it, what about doctors, whose medical data may be pertinent across international lines BUT can be bound by HIPAA (or similar doctor/patient confidentiality)? Also, the volume of data could be significant enough that an Internet transfer may not be practical.