https://lcme.org/directory/accredited-u-s-programs/
At one point the AMA did lobby Congress to restrict the number of residency slots but they long since reversed that position and now lobby for an expansion.
They're one of the largest lobbying groups in America with disastrous consequences. They have a consistent history of empty promises, including their rhetoric on expansion which hasn't been successful despite the years they've had and the political leverage during the national health emergency. https://www.zippia.com/advice/largest-lobbyist-groups/
Here's a differing opinion from yours where "The American Medical Association (AMA) bears substantial responsibility for the policies that led to physician shortages". https://blog.petrieflom.law.harvard.edu/2022/03/15/ama-scope...
I hear about how wealthy and powerful the medical community is yet they shift the blame at every opportunity. I hope medical schools require students have a spine too.
It's always disappointing to see this kind of lazy, low-effort comment on HN. This is all public information that you could easily find if you bother to look.