Because of economic border less soulless unAmerican "Captains of Industry" tariffs are becoming a necessity. There is an economic playground in America with 26 R-T-W states, if that isn't good enough than pay the tariffs out of the profit margin...
The manufactur of Apple products in the US would triple or quadruple the price of what they cost now. In other words, it would be a far smaller company - and entirely different company, with entirely different products.
So no, these Apple jobs in China are not taking jobs away from Americans ..they are in fact allowing Apple to grow so fast that tens of thousands of Apple jobs for support and the like are created here - that would not be here otherwise. Apple’s success, like most business success, is a win win for almost everybody. This is the dynamic that the protectionists and the unionist does not understand.
Again, you don’t have a clue about the economic reality .which is what all of this comes down to.