For instance, we actually have tried something like the NHS in the US, it's called the VA, and it's much, much worse than the regular US healthcare system.
Yes, it is much worse and poorly run, but the VA isn't exactly open to everyone - they only take Veterens. In contrast, NHS is open to everyone, though people do have the option to pay more for private care and/or private health insurance.
For instance, we actually have tried something like the NHS in the US, it's called the VA, and it's much, much worse than the regular US healthcare system.