The current bastardized form of "Free Trade" where factories are closed here and sent to a backward third country in secret trade deals, with the intended purpose of under cutting domestic labor is new modern phenomenon. It is an ugly thing that I think even Adam Smith would be appalled with. Marx would love it. As you do.
...send you the bill for social spending...
That's usually how the left goes on this, that we need higher taxes in order to support ever expanding welfare rolls --no matter what. This has gone on so long that we not only now have a debt burden approaching Greek levels (as tax rate hike quash revenue) but welfare programs end up making less sense than ever: America's Poor Still Live Better Than Most Of The Rest Of Humanity.