The US hasn't had a solid manufacturing economy for a long time; some geniuses decided that we're better off doing virtual reality work and sending real manufacturing abroad. That trend is nothing new. On the surface, the current Administration's push for "green" jobs sounds good, but when the consumer economy heads south, ventures like that dry up very quickly (solar has been decimated, and not just because of Solyndra). The "shovel ready" jobs also haven't materialized.
If you read the little Tyler Cowen book that I mentioned in my blog post, I think you'll see very quickly that the trend we're seeing started many decades ago and leads nowhere good. When you say "sci & tech" in the US today, people think you mean iPods, iPhones... but unfortunately there aren't any iJobs. And that's not going to get better.