United States v. Steven Baxter, 951 F.3d 128

Steven Baxter allegedly mailed two packages from South Carolina to St. Thomas, U.S. Virgin Islands; CBP K-9 alerted to the first package and officers discovered gun parts; a second package was x-rayed and found to contain a gun and ammunition.
CBP arranged a controlled delivery; Baxter was arrested and charged with two counts of illegal transport of a firearm under 18 U.S.C. § 922(a)(5).
Baxter moved to suppress the guns, arguing the warrantless searches of the sealed packages violated the Fourth Amendment; the District Court granted suppression, reasoning the packages never left U.S. territory and the border-search exception did not apply to inbound packages from the mainland.
The District Court distinguished United States v. Hyde on the ground that Hyde involved travel from the Virgin Islands to the mainland; it held privacy interests in mailed packages outweighed customs interests here.
The Government appealed; the Third Circuit reviewed legal conclusions de novo and concluded the border-search exception applies regardless of direction and that the searches were routine and reasonable.

Issue	Baxter's Argument	Government's Argument	Held
Applicability of border-search exception at the customs border between mainland US and the Virgin Islands	Warrantless searches of packages sent from mainland to VI violate Fourth Amendment because packages “never left United States territory” and direction matters	Border-search exception applies at the VI customs border and permits routine, suspicionless searches of mailed items	Exception applies; direction of travel (outbound vs inbound) is immaterial; searches were reasonable
Whether the direction of travel (mainland → VI) precludes Hyde’s rule	Directional distinction makes Hyde inapplicable; inbound searches less justified	Hyde and subsequent precedent apply regardless of direction; public policy supports monitoring both inflow and outflow	Directional distinction rejected; Hyde controls
Whether the searches were routine or non-routine (requiring heightened suspicion)	Searches of sealed mail implicate privacy and may be more intrusive than Hyde	Searches were routine inspections of packages and far below intrusive searches that require reasonable suspicion	Searches were routine customs searches; no heightened suspicion required
Challenge to regulatory authority for CBP inspections (APA, arbitrary/capricious, nondelegation)	Regulations authorizing searches are procedurally and substantively invalid	Regulations valid and authorize inspections	Regulatory challenges forfeited on appeal because not raised below; court declined to decide

United States v. Hyde, 37 F.3d 116 (3d Cir. 1994) (recognizing border-search exception applies at the customs border between mainland US and the Virgin Islands)
United States v. Ezeiruaku, 936 F.2d 136 (3d Cir. 1991) (holding border-search exception applies to outgoing searches at the functional equivalent of a border)
United States v. Ramsey, 431 U.S. 606 (U.S. 1977) (establishing that mailed letters crossing a border may be subject to warrantless border searches)
United States v. 12 200‑Ft. Reels of Super 8MM Film, 413 U.S. 123 (U.S. 1973) (discussing historical justification for border searches to prevent contraband entry)
United States v. Montoya de Hernandez, 473 U.S. 531 (U.S. 1985) (articulating the diminished privacy expectations at borders)
Whren v. United States, 517 U.S. 806 (U.S. 1996) (clarifying that subjective enforcement motives do not govern ordinary Fourth Amendment analysis)
United States v. Whitted, 541 F.3d 480 (3d Cir. 2008) (distinguishing routine border searches from highly intrusive non-routine searches that require reasonable suspicion)