Denison University (OH) President  Adam Weinberg writes: Two of the most persistent challenges facing the U.S. are a lack of meaningful jobs and growing income inequality. And these problems are only getting worse. Sure, there are jobs out there, at fast-food restaurants or fulfillment warehouses desperate to hire someone — anyone. But what we really need are meaningful jobs that anchor people. This means positions that pay a livable wage, provide benefits and stability, and enhance skills so that people can eventually move on to even better jobs.