This bill proposes an amendment to the Patient Protection and Affordable Care Act, specifically Section 1311(c), to address dual enrollment issues. It mandates the Secretary to establish a program within 60 days of enactment to identify individuals simultaneously enrolled in a qualified health plan through an Exchange and in Medicaid or the Children's Health Insurance Program (CHIP). The program will involve a recurring, at least quarterly, comparison of enrollment information using the Public Assistance Reporting Information System (PARIS) or a similar successor system. This data matching aims to pinpoint individuals who are receiving coverage from both sources. Upon identification, the Secretary is directed to take appropriate enforcement actions, such as notifying relevant Exchanges and the Secretary of the Treasury, to prevent these individuals from receiving premium tax credits or cost-sharing reductions for their Exchange plans.