Not a bad idea, but seems very unlikely. Apple stopped supporting the iPhone 6 about eight years ago. Even the iPhone 8 became unsupported four years ago. Several industry analysts are saying Apple needs to offer low-cost iPhones in some markets. Unfortunately, I can easily think of a lot of incremental costs involved, especially for chips redone in a cheaper fab process, additional IOS development for less capable chipsets, testing, and support. I find it difficult to see Apple doing this.
Okay, iPhone 6 is a bad example. It was my favorite phone though. The point is that Apple can use TSMC AZ fabs for low volume N-2 or N-3 phones. It is a "made in the USA" slight of hand.