In July 2020, the Board of Immigration Appeals issued a precedential decision, Matter of M-D-C-V-, 28 I&N Dec. 18 (BIA 2020), upholding the Department of Homeland Security's practice of subjecting individuals inside the United States but near the border to the "Migrant Protection Protocols." In this amicus brief filed on behalf of CLINIC and other nonprofit legal service providers, we argue that there is no legal authority to return asylum seekers on U.S. soil to Mexico.