"So what?" The shortsighted protectionism in 1910 and 1997 put them into the eyes of political scientists and ideologues and, before AI, there was talk of addressing the shortage using graduates of foreign schools and scope increases for mid-level providers: https://www.politico.com/agenda/story/2017/10/25/doctors-sal... Now, if something radical doesn't change, the shortage will probably primarily be addressed by increased private equity corporatization of medicine and AI-assisted diagnosis (made politically possibly by the retaining of concierge practices for the wealthy). This started with someone saying "we should have several times as many doctors" and, whether those are US trained or foreign (NHS trained?), the likely result is physician wages and power will fall. America was kind of designed to be controlled by the professional class, rather than landed aristocrats, so this will contribute to the ongoing reshaping of the country.