ACTON: What the Oregon Medicaid Study Tells Us About Big Government. “The most recent finding of the Oregon Health Insurance Experiment contradicts another Obamacare selling point. Among those who won the Medicaid lottery, investigators found “increases in emergency-department visits across a broad range of types of visits, conditions, and subgroups, including increases in visits for conditions that may be most readily treatable in primary care settings.” In other words, the free health insurance encouraged patients to visit the ER instead of the more-affordable doctor’s office.”