[HDThoreaun]

> Doctors have prevented this by setting strict limits on how many new doctors can be qualified at the national level

It's a bit more complicated than this. The bottleneck to becoming a doctor is residency, there are currently less spots than med school graduates. Every single residency loses money, so they're supported by the federal government. Congress could increase residency funding and more residencies would be created, and in fact the AMA consistently lobbies for that, but congress has refused.