A sovereign wealth fund for the U.S. could alleviate rising income insecurity, writes Peter Barnes. : The single most inconvenient truth about the U.S. economy is that for the foreseeable future, there simply won’t be enough good-paying jobs to sustain the large middle-class that was built up after World War II. This isn’t a secret. According to the U.S. Labor Department, most of the coming decade’s new jobs will be for retail salespeople, home health aides, office clerks, food service, customer service reps and the like. Try raising a family on one or even two of those jobs.