Both Bernie Sanders and Donald Trumpare blaming free-trade deals for the decline of working-class jobs and incomes. Are they right?
Clearly, America has lost a significant number of factory jobs over the last three decades. In 1980, about 1 in 5 Americans worked in manufacturing. Now it's about 1 in 12.
Today, Ohio has a third fewer manufacturing jobs than it had in 2000. Michigan is down 32 percent.
Trade isn't the only culprit. Technological change has also played a part.
When I visit one of America's remaining factories, I rarely see assembly-line workers. I don't see many workers at all. Instead, I find a handful of technicians sitting behind computer...