Interesting enough thread.
While I think it's likely that most of the problems for shiippers would be
in having to make extra trips to the postoffice and in filling out
additional forms...
something not yet mentioned might be that
modern computers can qualify for supercomputer status, and since they are
capable of doing things like nuclear simulations, code making & breaking
and the like, there is one other important reason to restrict international
trade.
related:
http://articles.findarticles.com/p/articles/mi_m0CGN/is_3740/ai_55695270
"US Dept of Commerce Relaxes Supercomputer Export Controls" (1999)
Limit _was_ apparently on 2GHz machines.
John A.