As with foreign policy, this is much more complex issue than I can cover here.
Problem: Our economy is very much rigged in favor of those who already have all the money and that shit needs to change (refer to my Money & Politics section). Over the past 40 years, taxes on the wealthy and corporations have gone down, and the middle class has been forced to make up the difference while the poor have lost access to basic social services. This whole system is a shitshow, and I genuinely don't know how to fix it given our political climate. But I do know that we've become, as a society, entirely too obsessed with money to the detriment of other meaningful metrics like happiness and longevity. But, before we can address the problems, we have agree that there is a problem and that seems to be our issue right now. The poor get poorer and work harder while the rich get richer and tilt the field increasingly in their favor.
Answer: The US economy needs a serious overhaul. We need to strengthen unions and collective bargaining, prevent outsourcing of labor and production by implementing anti-slavery supply lines, and tax corporate profits (PROFITS - not revenue). Give money to the poor and they will circulate it back into the economy and create more demand for good and services, thus we should implement a UBI or negative tax bracket system to enable this boost to the economy.
Original source can be found here.