perhaps every pallet of goods must have a gps tracker
from manufacturer to target destination
then if a company violates its shipping codes
or sends products for re-labeling, re-packing, etc
it will all be trackable
and products could be banned for years etc
manufacturers have thwarted taxes on imports for a long time
for instance, a tax on a "new design" of shoe
is less than an old design of shoe
and ports have storage where products are kept for years in order to avoid taxes
it's a game
you just have to know how to play it