Once we understand and fix our immigration system, we will then be in a position to understand what America's true health-care cost is a percentage of GDP, and how many people citizens are actually without coverage. I suspect it's a much lower number than advertised.
But, without the illegal immigration problem fixed, health-care will never be fixable.
The government has no business “fixing” health care to start with. No nationalized health care. The way to “fix” it is to get the government out of it, just as the way to fix our economy is to get the government out of it. Period.