It's not just our aging population. It's also a side effect of running large trade deficits with developing nations. China's entrepreneurs generate huge profits

It's not just our aging population. It's also a side effect of running large trade deficits with developing nations. China's entrepreneurs generate huge profits, and they want to invest them somewhere safe. In terms of default risk, investments in the USA are about as safe as your mattress, and pay about the same interest ...