Ever call up a US company to get a technical question answered about their product? Sooner or later they admit "We don't know 'cause we don't make 'em. We just sell 'em." But I won't wax on about the Race To The Bottom and the idiocy of the American consumer and their river of plastic crap.
A vertically integrated economy is essential for a nation's health. Once you have that you can choose to trade and do so without a gun to your head. Imo the US is right on the brink in terms of losing foundational manufacturing once and for all. Optimistic talk about how we're a tech society now and all we have to do is be techy is a bunch of horseshit. Programming Iphone apps is dandy but it's a cherry on top. If you don't have the sundae then what good is it? Retain your ability to make the entire item. Once that's gone, and you really need someone else to make things, they're going to steal you blind and fuck you senseless with a billion little Chinese peckers.
I'm with The Donald on this one. He's a tard but you don't need an agriculturalist to know which way the potato rolls.