And the US doesn't have universal healthcare. Scaling that type of system up rapidly (while dealing with pre-existing supply constraints) is very difficult to s

And the US doesn't have universal healthcare. Scaling that type of system up rapidly (while dealing with pre-existing supply constraints) is very difficult to say the least. Rapid immigration will just make every big shortage that much worse, and healthcare is particularly difficult to increase in terms of supply (doctors, nurses, hospitals, etc; just takes a lot of time).