Earlier quoted context omitted.
OK lets assume the entire chain is automated and you don't need to employ anyone. The factory can go anywhere, in China, in France, in California, in North Dakota. What benefit is that to the average American citizen?
The US government can tax the factory and spend the tax revenue on average Americans. The German government for example gets a big fraction of its revenue from taxes on export industries that employ only a small fraction of Germans.
Or you could bypass all that and simply tax Apple now, despite their factory being in China.