Trump doesn’t appear to know anything about economics — or anything else either. However, it’s not unusual for Presidents to have limited knowledge in many areas that require strong response. They compensate by having advisers who can lead them in the right direction — or perhaps a reasonable direction. The question is: who is recommending these tariffs. Certainly Wilbur Ross, Steve Mnuchin, and Gary Cohn would not share these views. So it’s Peter Navarro? Who is he?