In an August 26th New York Times op-ed, Jon Gabel wrote that over the last 30 years, the Congressional Budget Office (CBO), which assesses the costs of health reform and other legislation as it moves through Congress and is widely respected for its competence and integrity, has underestimated the amount of savings and overestimated the costs that major changes in the health care system would bring. Drawing on Commonwealth Fund–supported research, Gabel, a senior fellow at the National Opinion Research Center of the University of Chicago, analyzed CBO's forecasts of three major changes in the Medicare program relative to their ultimate outcomes.