Politicians across the political spectrum herald “job creation,” but frightfully few of them talk about what kinds of jobs are being created. Yet this clearly matters: According to the Census Bureau, one-third of adults who live in poverty are working but do not earn enough to support themselves and their families. A quarter of jobs in America pay below the federal poverty line for a family of four ($23,050). Not only are many jobs low-wage, they are also temporary and insecure. Over the last three years, the temp industry added more jobs in the United States than any other, according…