Wrong. Anything where personal contact is not required is being "offshored". Radiology. You don't know who is reading your x-ray, nor where they are.
The trades depend on people who have money to spend to do new construction, remodeling or repair. Unemployed people don't do those things. Governments tend to defer that kind of spending when tax revenues decrease (because unemployed people don't pay taxes).
Medicine? Why spend $50,000 to $100,000 on pursuing a medical degree when you will have to pay $90,000 to $120,000 per year to the malpractice insurance companies to work in your field (not to mention repaying your school loans, home mortgage, food, clothing, etc). You would have to be a real masochist to follow that direction in today's environment.
Teaching can be outsourced. Just turn on a TV in any college town. You will find some channel dedicated to teaching a few selected classes for the local college. It is tougher to do this with K-12 because the students lack maturity and self-discipline. That might answer why our school systems are performing so poorly. The teachers are every bit as undisciplined as the kids they are supposed to teach.
Law enforcement and fire fighting are two fields that can't be effectively sent offshore. Both are inherently dangerous and neither pays very well.
In my home, we have two different lines of employment. My wife dispatches for the police and fire departments. I work in the IT field. My income is 5X more than what my wife makes. The marriage penalty is enormous. We tolerate it because her income alone would keep us afloat if my current employment evaporates.
If one of the bright, unemployed IT types here is willing to learn the dispatch business and relocate to southeast Idaho, we have two positions open. It takes someone who can conduct a mental 3 ring circus, speaks clear English, can pass a background security test and has good common sense in the area of officer safety. The last two candidates flopped after 6 to 15 weeks of training. Send me FReep mail if interested.