The lawsuit seeks to block provisions of a federal rule that sets standards for health plans offered in 2027 and was opposed by the coalition in a March 2026 comment letter. Congress enacted the ACA to expand access to affordable health insurance, and more than 23 million Americans currently receive coverage through its marketplaces. Today’s lawsuit follows the coalition’s challenge to the Trump Administration’s similar 2025 ACA Marketplace rule. The Administration’s new rule setting standards for 2027 health plans bring back many of the same provisions and adds new changes that further undermine the ACA. Unlawfully expands eligibility for catastrophic health plans, which cover very little and leave consumers with huge out-of-pocket costs, beyond the limits established by Congress in the ACA.