US importers moving their production away from China will invariably incur high transition and logistics costs which may very well rival the tariff burden they seek to avoid. And then of course they have no way of knowing whether Trump will wind up imposing tariffs on the so called “safe harbor” countries like Vietnam or Bangladesh where they may move production.
There is no doubt that trade inequities and other egregious trade behaviors are long overdue for remedy with regard to China, the EU and the NAFTA countries: Mexico and Canada, but conducting a public "school yard" like fight against them all in the manner in which Trump has proceeded is completely unworkable.
Trump can’t afford to lose face in the eyes of his base in the same way that the Chinese leadership is unlikely to. They, in fact, may be willing to stone wall and play hardball with Trump betting that this depresses the US economy and causes Trump to be thrown out of office in 2020 in favor of a more reasonable and reliable Democratic candidate.
Trade wars have never succeeded. Never. Why? Because countries that are hit with tariffs retaliate with tariffs of their own. Always. China, quite clearly is capable of retaliating as they are now doing.
Tariffs often result in unintended consequences. The “tit for tat” Common Market imposed tariffs on US poultry products in the 1960’s (The Chicken Tariffs) resulted in the US retaliating by imposing tariffs on Common Market manufactured trucks. Now, 50 years later, the chicken tariffs are gone but the truck tariffs remain, resulting in unwarranted high prices that US Consumers continue to pay to this day.
Consumers always, always, bear the burden of tariffs in the form of higher prices and or lesser quality and/or less appealing merchandise.
Finally, there is no reality to large scale needle trade and metal bending industries returning to the US. Why? Because though the US has extraordinary technology and logistics resources available, the US is an extraordinarily expensive place to manufacture goods. Goods brought back to the US for US manufacturing will necessarily become far more expensive than they have been based upon offshore production.