Printer-friendly version A new study published by the Brookings Institution reveals the rollout of the Affordable Care Act (ACA) is imposing far more volatility and harm on people in Minnesotas individual market than elsewhere. The study, by Yale economist Amanda Kowalski, takes an early look at the impact of the ACA on the individual health insurance market. It compares state-by-state coverage levels, insurance premiums and insurance costs in the first two quarters of 2014 to estimates of what they would have been if the ACA had not been implemented this year.