United States v. Kolsuz
- Court
- Court of Appeals for the Fourth Circuit (Federal circuit court)
- Decided
- 2018
- Citation
- 890 F.3d 133 (4th Cir. 2018)
- Standard applied
- Border-search exception — routine versus nonroutine searches
What the court held
A month-long, off-site forensic examination of a smartphone seized at an airport is a nonroutine border search requiring individualized suspicion; the manual airport search of the same phone was routine. The court affirmed the denial of suppression, and declined to resolve whether the required showing is reasonable suspicion or a warrant on probable cause.
Why
Reading Riley into the border context, the court held that the privacy intrusion of a forensic extraction — which produced a nearly 900-page report cataloguing the phone's data — puts it in the category of highly intrusive searches the Supreme Court has said require particularised suspicion. On what that standard is, it noted that no reported decision had ever required more than reasonable suspicion for any border search, and that the government's showing here exceeded it in any event.
Our reading — not the court’s words
Why this matters in practice
Kolsuz is the cleanest statement of the manual-versus-forensic line that now governs device examinations at the border, and it is the line an examiner is actually operating on either side of. Practically it means the legal character of the search changes at the moment the device is connected to extraction tooling, which is a question of method rather than location. The court's refusal to choose between reasonable suspicion and a warrant is why this area still splits by circuit — compare Cano and Wanjiku.
This paragraph is Legal Cyber Academy’s editorial assessment of the decision’s practical importance. The court said none of it. For what the court actually said, read the opinion.
Additional detail
Tags: border search · forensic extraction · smartphone
Cited 52times in CourtListener’s corpus at the time this entry was compiled. Treat it as a rough measure of influence, not of correctness.
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