Some packing houses are customs warehousing, so they've gone through a customs system to have customs brokerage. There would be some that are more reliable than others. I would think you would approach it in the same way you risk assess import cargoes: look at where they're coming from, who has packed it and what the shipping line is. You would take a similar approach, such as whether they put good electronic seals on—that sort of thing. If they're a reliable, trusted customs broker, it would be less likely you're going to have a problem there. If it's something packed by an individual or by a warehouse you're unaware of, that would be a higher risk profile.
Again, the port doesn't have that information. The CBSA would have that information going through. We don't get told the origin of that cargo. We aren't given that information.