This key factor is fueling rampant inequality under Trump

I was secretary of labor 30 years ago when the U.S. economy was producing an average of 200,000 new jobs a month.

I remember holding news conferences on “jobs days” each month. I felt confident about the strength of the economy. What worried me then was that the new jobs didn’t pay well. (A disgruntled worker once called out to me, “Sure, Mr. Secretary, lots of new jobs. I’m doing three of them to make ends meet!”)

Last Wednesday, the Labor Department reported that the United States...