> otherwise they assume the entire PCB consists of copper, aluminum, and steel, and charge a 100% tariff on the whole product.

This seems like it could also lead to absurd situations. If a device contained both, would customs pretend it was simultaneously 100% made out of copper and 100% made out of steel and apply both tariffs?

> This seems like it could also lead to absurd situations. If a device contained both, would customs pretend it was simultaneously 100% made out of copper and 100% made out of steel and apply both tariffs?

Yes, because it benefits the “here’s how much extra revenue our copper tariffs generate in 2025” sound bites for the Administration to tout (even if they are fabricated numbers based on nonsensical assumptions.)

Yes they would 200% of product won't be a problem for them.

Furthermore as I know customs, the moment you will start making stuff up in a too brazen way, they will just use Google, search some average price of products and use that instead what you are declaring.

Sometimes it looks like they are getting a cut from amount of tariff they successfully scalp from you.

Even before these changes, there were absurdities where items cross a border with one step of the manufacturing process missing because in one direction it's an unfinished good that has no tariff, and in the other direction it's a finished good coming from a preferred country with a lower or no tariff.

The situation is already absurd, what's a little more absurdity.