Everyone in America currently has a right to healthcare (shouldn't be denied for discriminatory reasons). 

No one has the right to slave labor. (also why income taxes are immoral)

America's healthcare industry is an enormous rat's nest. I don't think single-payer is the best answer. I'm not sure what is, but right now I do know insurance companies have WAY too much say in dictating care. Shifting all that to the federal government doesn't seem like the best solution.