The limit is where it is because the AMA put it there because they were afraid of the "physician glut" ruining salaries. They're probably responsible for around as many American deaths as many of the world's worst dictators.
Pretty clever retcon in their text to make themselves out to be heroes, if your source is the AMA.
Vote whichever way you want, I'm absolutely right:
* https://usatoday30.usatoday.com/news/health/2005-03-02-docto...
* https://www.nytimes.com/1986/06/14/us/ama-board-studies-ways...
* https://www.washingtonexaminer.com/thanks-to-doctors-there-a...
* https://www.baltimoresun.com/news/bs-xpm-1997-03-01-19970600...