In a new study published today by the Mercatus Center at George Mason University, Brian Blase assesses key predictions made by both government and nonprofit research organizations about the Affordable Care Act’s impact. The misestimates include: overestimating total exchange enrollment, overestimating enrollment of higher income people who do not qualify for subsidies to reduce premiums, projecting too many healthy enrollees relative to less healthy enrollees, and underestimating premium increases. This Forbes post focuses on the Congressional Budget Office’s (CBO) estimates.