Construction, electrician, plumber, welder. You can't offshore these jobs, they must be done here.
But you can on-shore cheaper labor. H1-B? I grew up in southern California. I am not a union fan but this is instructive. My uncle was a plasterer in the plasterers union. They did mostly drywall but he was a highly skilled finish specialist and troubleshooter who could actually "plaster" a wall, do moldings etc. and made a good living. In came the third world labor at $8/hr to do all the drywall in LA and broke the union. Once the union was gone they immediately charged almost the same as the union plasterers. No reason not to anymore...
Very few jobs will exist for humans in any area of work much sooner than most people think. Obviously society will have to pay people not to work. Freedom might become a much more real concept when people are freed from monetary demands. The very notion of concepts such as socialism, communism and capitalism will become quaint and obsolete concepts.
I understand the thrust of your point, but if someone else provides your living you are a slave. They can stop providing it at will. They can choose to provide it only if they "insert any restriction here;" like all your data/communication/thoughts (in the future) belong to them. Point taken, but I don't *want* to belong to someone.
As long as we're going to reinvent the wheel again, we might as well try making it round this time. - Mike Dennison