The only thing tariffs do is raise the price of imported and exported goods. The intent behind that is to encourage domestic production of a given good. However, we largely do not have domestic production of many, many, many different goods in the USA. So the primary outcome is going to be a decade or more of much higher prices for literally every single kind of consumer, business or industrial grade electronic device or good. It's terrible for the economy. It will lead to a record recession or even a depression. Tariffs do not punish the target country. They punish Americans attempting to buy from those countries. This means new start-ups and new businesses will not be able to afford things from third-party manufacturers in China.