> As I said above, restoring working of existing fabs will require rebuilding the entire Asian supply chain for chemicals, spare parts, consumables, and services.

As I said, we produce a lot of high-end semiconductors in the USA: the supply chains are already there, they are simply more expensive. If consumer semiconductor production had to move back to the states, we would have to repurpose those supply chains, they probably would never be as cheap, but we are talking 10 or 20%, not something horribly crippling to the economy.