On top of that, as we saw with Russian sanctions, it's very difficult to enforce such things effectively. For example, Chinese could just build factories in Mexico, or sell stuff through third parties. This becomes very difficult to track, especially when trade is being done increasingly outside the dollar. So, the US is guaranteed to lose this game of whack-a-mole trying to enforce their tariffs.

Ultimately, the selection pressures of capitalism favor companies that can generate more profit than their competitors. I also don't see customers giving a fuck where their stuff is made. Especially given that the economic situation is not looking all that great. People will buy stuff that's cheapest to save money.