The United States also has only 5% of the world's population (304M/6,700M), but produces a heck of a lot more than 5% of the world's medical innovation. Over the next 20 years, one side effect of this sort of bill might be to slow that innovation down.
> The U.S. ranks relatively poorly -- near the bottom of the industrialized countries -- on almost every measure of performance.
With an incredibly unhealthy lifestyle, it's pretty incredible how long American longevity is. A fine on obesity would probably do more to increase American health than a fine on being uninsured, but that's unlikely to happen.