The idea of a “K-shaped economy” has become one of the most persistent themes about the US economy: While some households continue to thrive, in particular the wealthy ones, everyone else falls further behind. On this episode of Trumponomics, host Stephanie Flanders, Moody’s Analytics Chief Economist Mark Zandi and Bloomberg Economics’ Andrew Sacker explore whether that narrative is simply another way of describing that longer-term American phenomenon of inequality — or whether it points to a deeper vulnerability.