The American Action Forum recently assessed the plausible effects of a ruling for the plaintiff in the Supreme Court case, King v Burwell, concerning the legality of subsidies in the federally-run health insurance exchanges implemented under the Affordable Care Act. At the time of writing, the most up-to-date number for enrollees at risk of losing a health insurance subsidy was 7.7 million. But this week, the Center for Medicaid and Medicare Services released an update to enrollment figure that counts effectuated enrollment, which includes only households that have paid an insurance premium.[1] As generally expected, roughly 15 percent of individuals with “plan selections” did not pay a premium and become actually enrolled. In light of this most recent update, roughly 6.6 million individuals across 37 states are at risk of losing their subsidies. The other impact estimates in the original AAF research remains unaffected, including 11.1 million people that will no longer face the threat of an individual mandate penalty.