The Trump administration said on Tuesday that 11.8 million people had signed up for health insurance through the Affordable Care Act marketplaces for 2018 — roughly 400,000 fewer than last year. Virtually the entire decrease came in the 39 states that use the marketplace run by the federal government, HealthCare.gov. In the 11 states that sell coverage for the ACA through their own marketplaces, enrollment remained the same as last year.
