[20after4]

I really didn't mean to imply that one TSMC plant in AZ could replace Taiwan, nor that we should only care about semiconductor wafer output or worse to discount the desires of the Taiwanese people. Presumably, at least some large fraction of them wish to remain independent from China.

From a US strategic perspective, there are a lot of other things made in Taiwan other than just semiconductors. They make a lot of machine tools, for example, and tend to have better quality than what we can get imported from China directly. The castings are likely made in China mainland but then finished in Taiwan. You can get nearly identical machines from either source but the Taiwan-made version is generally superior.