One thing not mentioned is the cost of medical school (both in time and money) in the US vs. other countries. I’d imagine that a decrease in doctors’ salaries in the US could cause a significant drop in the number of people willing to spend the amount of time and money necessary to become a doctor. If we want to decrease the pay to match other countries, I think we’ll also need to decrease the investment required to become a doctor in order to maintain a reasonable level of supply.