There's a very simple way to give Medicare to all: delete six words from the legislation that created the program in 1965.
Bernie Sanders' single-payer health care plan is bound to be expensive and politically impossible. A simple expansion of Medicare offers a cheaper and more passable path to universal care.
With Obamacare in peril and no health care plan in sight, it's logical to ask whether states could design their own single-payer health insurance plans. Efforts in California show why it's unlikely.