The worst cases that I remember were usually private equity / leveraged buy outs, that usually leads to a transfer of the production to EastAsia. That practice is not exclusive to Amercan companies though.
It will be interesting to see how the new Chinese investments will fear (Kuka) and if the German goverment will adopt a stronger stance on this take overs in the future.
Not trying to say that either practice is good, but there tends to be a bias in perception, naturally. We're always the good guys and China is the evil 60s SciFi villain who's mostly just evil because he's evil, kind of.
But even if it were totally legal, restructuring a company with the goal of pumping all the money out of it and then just watching it crash and burn just doesn't sound like it should be. Not any more legal than whats described in this article, in my humble understanding of right and wrong.