To prohibit the Secretary of Health and Human Services from finalizing a rule proposed by the Centers for Medicare & Medicaid Services with respect to the determination of whether an individual is lawfully present in the United States for purposes of the eligibility of such individual for enrollment in certain health insurance programs.

HR 5336 blocks the U.S. Department of Health and Human Services from finalizing or implementing a specific Centers for Medicare & Medicaid Services (CMS) rule. This rule, proposed in April 2023, would have changed how the government determines if an individual is "lawfully present" in the U.S. for eligibility in health insurance programs like Medicaid and the Marketplace. The bill directly prevents this rule from taking effect, meaning it would stop changes to eligibility rules affecting immigrants seeking health coverage through these programs. The key mechanism is a simple prohibition on finalizing the specific rule (88 Fed. Reg. 25313-25335) or any substantially similar rule.