[iav]

Items that contain multiple elements get the highest tariff rate of any of them - a glass window with aluminum frame gets the aluminum rate because it’s the highest one.

[chipsrafferty]

But how do you determine where to divide objects into components?

[somenameforme]

There's a much more informative article here. [1]

It's by value. And it's not just domestic only but USMCA (US-Mexico-Canada). And the tariffs are seemingly prorated by percent 'domestic' (their example math is nonsensical, but I think that was just a math fail on the writer's part) with numerous relief and rebate options available to help ease in the transition period for various auto manufacturers.

GM, Ford, and other companies have chimed in positively.

[1] - https://www.carscoops.com/2025/04/trump-eases-auto-tariffs-l...

[gadders]

You take this 4.5 hour exam to prove you know how to do it: https://www.msn.com/en-us/money/other/the-impossible-four-ho...

[moomin]

I feel like the real answer is "This is why trade negotiations take so long". But when you're making up policy on the fly, who knows?