Until recently, I assumed that Joe Biden would get a second term despite worries about his age because most Americans find Trump so loathsome. But I’ve underestimated Bidenomics. It’s turning out to be the most successful set of economic policies the United States has witnessed in a half-century. It may not only give Joe another term but also give Democrats control over both houses of Congress. It may even put the nation on the path to widely shared prosperity for a generation. New economic data last week showed that inflation cooled to 3% in June, down from over 9% last…