Where are “people” (Conservatives) getting this idea from? Governments do not have total information of the production of all goods produced in the world. How hard is it to understand they just look at the shipping location of items and their classified category?
This, uh, does happen. It depends on the kind of item. When you’re importing a wristwatch, for example, you have to separate out the country of origin and value for the strap/bracelet, case, and movement and they’re handled separately. https://www.youtube.com/watch?v=IVwIyciIIiI
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: