TSMC doesn’t want to surrender its technology to the US government. We all know if the TSMC fabs get built in the US and are cutting edge, the US government will bomb TSMC’s fabs in Taiwan.

Sources, since it looks like my comment is news to some:

https://www.tomshardware.com/news/taiwan-will-defend-tsmc-from-us-bombing-in-the-event-of-a-china-war

https://www.businessinsider.com/us-would-destroy-taiwan-semiconductor-factories-avoid-china-trump-adviser-2023-3

https://www.washingtonpost.com/opinions/2023/05/12/microchips-us-taiwan-strategy/