United States v. Brignoni-Ponce

This case raises questions as to the United States Border Patrol’s authority to stop automobiles in areas near the Mexican border. It differs from our decision in Almeida-Sanchez v. United States, 413 U. S. 266 (1973), in that the Border Patrol does not claim authority to search cars, but only to question the occupants about their citizenship and immigration status.

I

As part of its regular traffic-checking operations in southern California, the Border Patrol operates a fixed checkpoint on Interstate Highway 5 south of San Clemente. On the evening of March 11, 1973, the checkpoint was closed…