People don’t leave the United States. No matter what kind of marxist hell-hole Obama turns it into, the rest of the world will decline as we decline. Their economies are all tied to ours. As America loses its freedom, the dictators of the world will rise up as we stop being the World’s Policeman. The future of individual liberty for humans dies with the US Constitution.
The foreign doctors may leave because they’d rather be slaves to their own people than to Obama’s followers.
Foreign doctors very well may leave (creating a massive shortage) and a financial crisis because they would also shaft the American financial system by walking away from their medical loans.