TSMC reportedly planning on building six new manufacturing facilities in the US

Probably more of a geopolitical survival strategy. The Republic of China and the People's Republic of China don't get along too well:

> The political and legal statuses of Taiwan are contentious issues. The People's Republic of China (PRC) claims that the Republic of China government is illegitimate, referring to it as the "Taiwan Authority".

- https://en.wikipedia.org/wiki/Taiwan#Political_and_legal_sta...

Doubt it. Swan and Gelsinger have both said that the IDM business model is a good thing.