If I could help out on that, it doesn't really tell him what's in there; it tells him what the person who is exporting it or importing it says is in there. It's up to customs to look to see if that makes sense or not.
Very often, they catch counterfeiters because they make mistakes in their manifests. It's actually moving from one victim to another victim.
Where it might be nice to hold some people responsible is if you have someone who is responsible for getting proper information on the address and name and contact information for the importer.