This bill aims to enhance transparency regarding significant changes to nationwide postal services by amending existing law. It mandates that when the United States Postal Service (USPS) plans a change affecting services on a nationwide or substantially nationwide basis, it must take specific notification steps. Specifically, the USPS will be required to submit its proposed change to the Postal Regulatory Commission for an advisory opinion a reasonable time before the change's effective date. Concurrently, the USPS must post a detailed notice of the change within affected storefront postal facilities. This notice must remain posted for at least 30 days after the change takes effect and include crucial information such as relevant details, associated timelines, anticipated impacts, and opportunities for public comment, along with contact information.