You're focusing too much on the what and not the why. Banning all foreign business in certain market segments to protect your domestic industry is fine (because it's all countries) Banning Chinese businesses because we're imposing trade restrictions with China is fine (because it affects everyone). Hell banning specific companies because they don't comply with local laws is fine too (because it's the same rules for everyone).

Fuck this one particular subsidiary majority owned by a Chinese company rubs me the wrong way because China doesn't do this to us. As a general rule US companies can operate in China and US companies are allowed to own stake in Chinese companies.

To me this is an escalation of the fair-weather, "I don't like you, you don't like me but we can still be professionals when it comes to mutually beneficial trade" attitude we've had.