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.
Don't the manufacturers give adapters now? Maybe that's only on newer models
Not sure my phev is 2013. My cousin bought a Bolt last year with no adapter. The 2023
Oof, I'd heard things like the Ford truck came with them but I'd suppose maybe that isn't universal