Requires states to study and report hospital costs for maternity, labor, and delivery care and funds help for small rural hospitals to compile cost data. Extends Medicaid and CHIP full benefits through pregnancy and for 12 months postpartum, creates an optional Medicaid "maternity health home" model for coordinated care, and authorizes planning grants. Provides new tools to support the maternal health workforce and keep maternity services available—including Commissioned Corps details, protections and plans when staff or units close, streamlined out‑of‑state provider enrollment, and funding for workforce and operational improvements. Requires hospitals to give advance public and state notice before closing obstetric units, explain impacts, and include detailed labor and delivery data in cost reports starting July 1, 2026; HHS must publish state and national reports and issue guidance by January 1, 2028.