Yes they are, but it's not about TSMC's superior quality, but the unsubstantiated BS that Samsung's chip manufacturing is a disaster.
And if you think that the U.S. is not using every tool in the box to win markets, including bad-mouthing foreign competitors and lying to win customers over, then you're just lying to yourself. Have you been living offline for the last 20 years? The Internet is a battlefield and no-one plays more dirty than the U.S.