Hence the concept of trade partnerships. No country makes everything, and yes, there's lots of competition.

Tarifs have existed since forever. Countries use them to protect local industries. But they've always been stable, and industry focused.

Food production for example is worth protecting and Canada has tarifs on imported Dairy. Partnerships exist to protect local industries, promote exports, and give citizens access to cheap goods. It's a complex balance set up over time with lots of nuance and negotiating.

Yes, sometimes tarifs kill a local industry as well. Lack of international competition let's local industry stagnate until it is dead. US ship building is a good example of this, and US Auto makers are trending in this direction. (Banning Chinese EVs is not bolstering the US EV production, it is causing the US manufacturers to ignore that market, and I don't think that ends well.)

Tarifs are a powerful tool when wielded well. Alas right now the US in unstable. Local industries can't rely on tarifs existing next week, never mind 5 years from now. I'm not investing in a local hockey stick factory because the tarif could disappear at any time.

In my country we get cheap solar panels from China. Frankly, let them sell below-cost if they like. (Hint, they're not below cost). We don't make them here, so cheap energy is good for all.

The US negativity to Chinese goods seems to be around dumping (which happens, but not much), around quality (frankly much of it is very good) or around human rights. (Cause, you know, we bombed Iran to promote human rights...)

I don't think Americans will suddenly love China. But the rest of the world is getting very cosy very quickly.