This is probably pretty obvious to most Americans. Strong economic growth means more jobs and higher wages. Just take a look at the current expansion. It has been only moderate as far as the pace of growth, but it has been sustained. And month after month of a growing economy has brought down the unemployment rate to its lowest level since 1969, even as real wages continue to grow for all income levels. That’s especially true for working-class Americans. The 3.5 percent unemployment rate for Americans with only a high-school diploma is the lowest since 2000. Indeed, despite all the debate about income inequality, earnings have been growing faster for those at the bottom than at the top.