When (not if) China invades Taiwan, those Taiwanese-made chips will disappear overnight. Even if China takes over the TSMC fabs intact, they'll be disrupted for years.

So sure, right now we might not want to pay that 20% markup for US-made chips, but 20% will be cheap if the only operational TSMC fabs are in the US.

I wouldn't want to pay 20% extra for US-made chips. The US threatened to invade a close ally and started trade wars for absolutely no reason. Paying extra to give the US even more economic power seems like a lose/lose situation to me.

I'd rather see America hooked on the same supply as everyone else to make sure they stop China from invading Taiwan. Our shared weaknesses force governments to cooperate, which is a win in my book.

The monopoly moving to the US from Taiwan doesn't really turn me on :)