What are the key regulations preventing medical schools from increasing in size or from new med schools forming? Does it run through the professional associations? Also it would be useful to see statistics on stocks as well as on flows. How has the number of MDs per capita shifted over time? Or # MDs per senior ? Aren’t those the most relevant statistics ? A quick online search found that it has actually increased from 2009 to 2019. So doctors trained abroad are filling in the gap to some degree.