This document is about the U.S. Department of Labor's efforts to implement and enforce the Mental Health Parity and Addiction Equity Act (MHPAEA) since the 2018 Report to Congress. It highlights the Department's partnership with states, stakeholders, and other federal agencies to promote compliance, provide guidance, and improve access to mental health and substance use disorder treatment. The report details the Department's enforcement strategy, consumer and compliance assistance initiatives, and plans for a new national enforcement project in fiscal year 2021.