Ironically the US already has tax funded healthcare, but only the most active voting block (old people) receive it.

Military, too.

And poor people through Medicaid and CHIP.

Native Americans have access to a full blown government hospital system not unlike UK's NHS.

In fact, the US has three times as many government-run hospital systems than most countries, and several times the number of government insurance programs. That's part of the problem. :)

Like how the current system is called casino funded healthcare?