Are jobs in the IT industry the only jobs that are outsourced offshore?

Are there jobs in the IT industry that cannot be effectively outsourced offshore?

When a similar trend toward outsourcing in the manufacturing industry occurred in the 1980s, the response was that workers should be retrained.

Should IT workers in the U.S. be retrained? What jobs would IT workers be retrained to do?

Is there any way to regulate offshore outsourcing?

If there were, would this be desirable?

Why are there no comprehensive laws at the federal level to protect whistle-blowers?