Make the Migrant Protection Protocols Mandatory Act of 2025

This bill requires U.S. border officials to implement the Migrant Protection Protocols (MPP), also known as "Remain in Mexico," for all eligible asylum seekers at the southern border. It changes the law to make MPP mandatory (replacing "may" with "shall" in immigration law), directly affecting migrants seeking asylum and border enforcement personnel. The key provision is a simple legal amendment ensuring MPP is applied without discretion, rather than allowing officials to choose whether to use it. This would require migrants to wait in Mexico while their U.S. asylum cases are processed, rather than being permitted to remain in the U.S. during the review. The bill does not alter asylum eligibility criteria or create new procedures.