You absolutely can, but the price of the workers for these kinds of things are way higher in the US as opposed to China. Also, if Apple could automate away manual labour to the point it would be economically viable they sure as heck would’ve done so already. Price increases using US-based manual labour are inevitable - its one of the major reasons why the global market is as it is today, cheap labour in developing countries.
It’s probably also because of tax. Here in the Netherlands, you cannot provide any clothes without a logo of a certain size. Otherwise it would be seen as ‘wages’. True to some extent. This is why companies here print their logos on stuff (even for newborn rompers).