PRECIS: Statutory restrictions regarding the regulation of prescriptive authority for midwives continue to create barriers to practice in many states.The regulation of prescriptive authority for certified nurse-midwives (CNMs) and certified midwives (CMs) is conducted by regulatory boards and individual state agencies. The purpose of this review was to update a previously conducted overview of the regulatory requirements relative to prescriptive authority for CNMs/CMs in the United States. State statutes and administrative rules relative to midwifery practice were reviewed for all 50 United States and the District of Columbia. As of June 14, 2015, the regulation of prescriptive authority for CNMs continues to vary widely across states, and CMs face substantial barriers to practice with prescriptive authority granted in just 2 states. Inconsistent regulatory requirements relative to prescriptive authority, which often impose barriers to full practice authority for midwives, continue to limit patientsʼ access to necessary services in many states.