Mullin v. Al Otro Lado

609 U. S. ___ (2026) · 6/25/26

Under the Immigration and Nationality Act, an alien “arrives in the United States” for purposes of 8 U. S. C. §§1158(a)(1) and 1225(a) only when the alien crosses the border into the United States; the INA neither entitles an alien standing at the border in Mexico to apply for asylum nor requires an immigration officer to inspect him.

The Immigration and Nationality Act of 1952 (INA), 66 Stat. 163, governs the process by which an alien who “arrives in the United States” is inspected by border officials, is deemed an applicant for admission, and may apply for asylum. The question in this case is when an alien who seeks to enter the United States from Mexico “arrives in the United States” within the meaning of that phrase in two key INA provisions—8 U. S. C. §§1158(a)(1) and 1225(a)(1): when the alien is standing in Mexico at the border, or only when the alien crosses the border and enters the country? In the spring of 2016,…

Held: An alien standing in Mexico does not “arriv[e] in the United States” by attempting, and failing, to set foot in this country. An alien “arrives in the United States” only when he crosses the border. The INA thus neither entitles an alien standing in Mexico to apply for asylum nor requires an immigration officer to inspect him. Pp. 7–18. (a) This case is not moot. The District Court’s declaratory judgment, which the Ninth Circuit affirmed, continues to bar the Government from using metering to deal with border surges within the jurisdiction of the Ninth Circuit. The Government represents…