CNN spent a good chunk of time doing the math to come up with a bottom-line figure for all of Bernie Sanders' proposals -- not just "Medicare for All" but the Green New Deal, free college, universal pre-K and child care, and so on. The total? An estimated $50 trillion. This week, he released fact sheets explaining how he'd pay for them -- or rather, how he'd raise $44 trillion in taxes to pay for them. Take a look at the Medicare for All portion in the chart below. You'll see that some of the money comes from rolling back...