By Bob Semro The biggest long-term concern with the American health care system is cost. The affordability of premiums, access to care and the impact of Medicare and Medicaid on state and federal budgets are all linked to the ever-rising costs of health care. Unless we bend the cost curve, the nations health care system will become increasingly unsustainable. The good news is that, even though costs and spending continue to increase, we have started to see a slowdown. Over the years, the news on this front has been consistently bad. For 31 of the last 40 years, health care…