Thank God our economy is moving forward and there wasn’t a stupid politician to subsidize farm jobs in the past so we could have stayed a 90% agricultural economy. We don’t need big government central planners like Trump and Sanders to attack our economic freedom and micro-manage our lives.
The US became the world's foremost industrial power at the end of the 19th century behind high tariff barriers.
Those barriers didn't seem to keep us all working on the farm.
The US has enough of its own natural resources and a large enough internal market to have free trade internally: we only truly need foreign trade for what we can't make ourselves, not so business owners can make short-term profits by forcing wages down to Third World levels.
If we follow the course of "free trade", we'll get Third World living conditions and --more importantly-- Third World politics here.