Sure, that could be the eventual goal. But for that to happen, we need to ramp up manufacturing in thousands of sectors: not just the device, and not just everything it contains, but also the machines that make each of the components, the machines that make the parts for those machines, the raw materials for each...

If this was a serious economic policy, it would have started small—perhaps a 5% tariff, to take effect in six months. Then, promise to ramp it up (say an additional 5% every year).

> to force/encourage the manufacturing of goods in the US, rather than importing them.

There are two mutually exclusive stated goals. One is, as you said, onshoring tech manufacturing to the USA [1]. The other stated goal is to eliminate income tax and replace it with income from tariffs [2][3]. To play these out on their own terms: if the first goal succeeds, then import volume would drop, and total tariff income would be too low to replace income taxes. If the first goal fails, then tariff income would be high enough to replace income taxes. IDK I haven't done the napkin math and I suspect neither have they.

[1]: https://www.foxbusiness.com/politics/trump-says-his-tariffs-...

[2]: https://www.foxbusiness.com/media/trump-proposes-abolishment...

[3]: https://www.foxbusiness.com/video/6371514396112

Going with Fox Business links to avoid accusations of bias.

Yeah, I could also cut off my hand in order to resolve an itch on it. End goal met!

> 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.