What about the TSMC intelligentsia? Will they reside in Arizona or Taiwan? Because if they remain in a China-controlled Taiwan, that Arizona facility won’t be very useful after, say, 5-10 years when next-gen chips are needed. They’ll be stuck in the past.
There are multiple, very large diasporas of people fleeing the PRC. Hong Kong got its initial start from fleeing Shanghai industrialists and bankers (the Hongkong and Shanghai Banking Corporation being a notable one). And many of those people also migrated on news of the handover (like HSBC), and also in the recent events.
I think congress will get their act together for one big change to immigration policy to get the skills to the USA. Some sort of fast track to residency for those involved, maybe with some extra financial incentive (Taiwan looks pretty cozy compared to Arizona).