I agree it's all bonkers, added to which the fact that America leads the entire world in services, especially tech and financial services, which more than make up any so-called trade deficit in terms of physical goods production, and a lot of these services are highly subsidised by cheap manufacturing of products abroad.
Take the iPhone for example. The hardware is imported, but the services are an export to the entire world, in terms of the App Store, iCloud, Apple Studios and so on.
So if the hardware is no longer to be made affordably thanks to Chinese wages and factories the size of cities, the revenue goes down for ALL of Apple's services.
The US is 90% a services economy, so it stands to lose an incredible amount of money and high quality jobs if such products are undermined.
Apple is only one example, there's also Microsoft, Google, Amazon who have highly profitable service exports built off the back of Chinese made hardware.
And the geo-political side of this is very dangerous for the US.
Europe especially and the rest of the world have massive leverage over US services, if they wanted to boot out VISA, Mastercard, PayPal, eBay, Amazon, Apple, Google and Microsoft or tax their digital services at 25%, that would destroy the US economy and there would be massive unemployment.
Trump doesn't know his arse from his elbow and it's why his businesses all failed.