Sure the big name/ high mark up brands could easily afford american labour. But they make more profit using overseas labour, so they do.
Its not quite that simple - Nike, etc don't own any factories themselves, but subcontract the 'messy' part of the business out, thus making it the contractors concern where to base plant.
This doesn't mean that US manufacturing is dead - far from it - there is still a lot going for it - a large pool of expertise, large stocks of raw materials, a large internal market leading to economies of distance, etc. But the sheer price difference compared to sourcing overseas will inevitably lead a large chunk of it offshore.
Take the Steel industry, since its in the news at the moment. The European Steel industry collapsed in the late 70s/80s, and had to be massively restructered, which is corporate speak for having almost all of it shipped abroad. The remaining euro industry is small and lean, and doing better.
The US was shielded from this then by the factors I mentioned above, but has come to the same point now. Really there's not much choice but to close a lot of it, but that's not exactly a wonderful thing to happen during your presidency, so George W was forced to use protectionist measures to prop it up.
Sadly, these measures do the American economy as a whole more bad than good, but the harm is spread out, and so not as visible as the closing of steelworks would have been. All this is just the way capitalism works.
Edit - oh, and isn't industryweek just another trade mag? Some might question whether its stance is *entirely* uninterested.
