The purpose of this legislation, known as the "Stop ACA Enrollment Fraud Act of 2026," is to strengthen the integrity of health insurance enrollments under the Affordable Care Act (ACA). It aims to prevent fraudulent activities, particularly duplicate enrollments, in the health insurance exchanges where individuals can purchase health coverage. One of the key provisions of this act requires the Secretary of Health and Human Services to create a system that checks for duplicate enrollments using social security numbers.