Phone Searches at the Border: What CBP Can and Can’t Do

The Fourth Amendment provides that “[t]he right of the people to be secure in their persons, houses, papers and effects, against unreasonable searches and seizures, shall not be violated.” U.S. Const. amend. IV. “[W]arrantless searches are typically unreasonable where a search is undertaken by law enforcement officials to discover evidence of criminal wrongdoing.” Carpenter v. United States, 138 S. Ct. 2206, 2221 (2018) (quotation omitted).

The border search exception is a “longstanding, historically recognized exception to the Fourth Amendment’s general principle that a warrant be obtained” for a search. Ramsey, 431 U.S. at 621. “[T]he border-search exception allows officers to conduct ‘routine inspections and searches of individuals or conveyances seeking to cross . . . borders’ without any particularized suspicion of wrongdoing.” United States v. Aguilar, 973 F.3d 445, 449 (5th Cir. 2020) (quoting Ramsey, 431 U.S. at 619) (emphasis added). Moreover, even “[s]o-called ‘nonroutine’ searches need only reasonable suspicion, not the higher threshold of probable cause.” United States v. Molina-Isidoro, 884 F.3d 287, 291 (5th Cir. 2018). “For border searches both routine and not, no case has required a warrant.” Id

The border search exception reflects “the long-standing right of the sovereign to protect itself by stopping and examining persons and property crossing into this country.” Ramsey, 431 U.S. at 616. “The Government’s interest in preventing the entry of unwanted persons and effects is at its zenith at the international border” and has been recognized “since the beginning of our Government.” United States v. Flores-Montano, 541 U.S. 149, 152–53 (2004). “Historically such broad powers have been necessary to prevent smuggling and to prevent prohibited articles from entry.” Ramsey, 431 U.S. at 619.

Accordingly, when it comes to manual cell phone searches at the border, our sister circuits have uniformly held that Riley does not require either a warrant or reasonable suspicion. See, e.g., United States v. Xiang, 67 F.4th 895, 900 (8th Cir. 2023) (“No Circuit has held that the government must obtain a warrant to conduct a routine border search of electronic devices.”); Alasaad v. Mayorkas, 988 F.3d 8, 18–19 (1st Cir. 2021) (“We . . . agree with the holdings of the Ninth and Eleventh circuits that basic border searches are routine searches and need not be supported by reasonable suspicion.”); United States v. Cano, 934 F.3d 1002, 1016 (9th Cir. 2019) (“manual searches of cell phones at the border are reasonable without individualized suspicion”).

Read the full case here: USA v. Castillo, No. 21-50406 (5th Cir. 2023), https://law.justia.com/cases/federal/appellate-courts/ca5/21-50406/21-50406-2023-06-19.html

Anton Vialtsin, Esq.
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