The iPhone 12 pro bought in Macau, China has Apple care+ and cannot be repaired in the United States

I bought an iPhone 12pro max two years ago while traveling in Macau, China, and then bought Apple care+. The service is still valid until now. Last week, my phone fell off the balcony on the second floor, and the front and rear screens were broken. And it was broken badly, I went to the Apple Store at the Spectrum Center in Irvine, California twice and told me that since my phone was bought from a different country, there is no repair part in California, so I can't repair it, and I can't get a fast replacement service? what should I do? Is it true that Apple mobile phones do not support global repairs, and AppleCare+ services cannot be serviced globally? Thank you very much for letting me know