I'm not arguing with your point, but the impact moving a small amount of chip production to the US will have. "Let's just move TSMC to the US" is a naive solut

I'm not arguing with your point, but the impact moving a small amount of chip production to the US will have. "Let's just move TSMC to the US" is a naive solution to the problem most people with little industry experience arrive at. No real effort is being made to move any significant portion of final fabrication out of Taiwan and into the US, and the latest and greatest processes are being developed exclusively in Taiwan. Progress on 5nm fabs in AZ will probably be excruciatingly slow, dependent on significant numbers of Taiwanese worker exchanges, and produce a chip 2 generations behind cutting edge by the time it's operational. There's some backlash in Taiwan over "piercing the silicon shield", but it looks like it could end up being a way to get the US and Taiwan to cooperate even more intensely than they already do.