Make the Migrant Protection Protocols Mandatory Act of 2025

HR 551, the "Make the Migrant Protection Protocols Mandatory Act of 2025," would require U.S. border officials to apply the Migrant Protection Protocols (MPP) to all eligible asylum seekers at the southern border, rather than allowing discretion. The bill amends the Immigration and Nationality Act to change the language from "may" to "shall" in Section 235(b)(2)(C), meaning officials must send asylum seekers back to Mexico to await their immigration hearings. This directly affects asylum seekers who would no longer have the option of remaining in the U.S. during processing. The key mechanism is a technical legal change to make the existing MPP policy mandatory for all applicable cases.