Say I'm an auto company and the supply chain is structured that many of my parts have to go back and forth across the border several times. This could result in thousands of dollars in tariffs as the value of the goods being transferred is calculated at each border crossing.
Now if I'm one of those providers in Canada, what's to stop me from lowering the price of my goods by 25% and charging an administrative fee that's not subject to tariff? Something like "Line production fee" that just happens to be the exact same value as what the tariff is eating up. Or they could charge a subscription fee that allows for X number of parts to be produced per month but reduces the cost by 25%.
Seems like we're going to see a lot of this kind of creative accounting. Surely the IRS will catch th... nevermind they fired all the IRS agents.
In short: invest in accounting firms.