https://www.wired.com/story/china-conquers-mexican-automotive-market-and-the-us-is-worried/
State department hand wringing that China is going to use the US trade agreements as they were designed is 
I fully expect them to redo these with "except china" clauses.
I knew someone about a decade ago who made a business of buying used Dodge Caravans (built in Canada) from the US then bringing them back into Canada to resell, the import and brokerage costs were thousands of dollars but the profit in the difference was still worth it because our prices for our own cars are that inflated.
There was a lot of paperwork and a few modifications that needed to be made... seemed like a lot of work, wasn't exactly easy money.