United States v. Johnson, 43 F.4th 1100

DEA Special Agent Jarrell Perry, working at an Albuquerque Greyhound stop, questioned passenger Nathaniel Johnson after seeing him place a backpack under the adjacent window seat.
Johnson initially denied having luggage and identification, consented to a patdown, then performed a "self-search" of the open backpack while angling his body to shield the contents.
Perry observed a black oblong bundle protruding from clothing inside the bag, asked about it, and when Johnson did not answer, Perry handcuffed him and removed him from the bus.
While still on the bus, Perry reached into the open backpack and felt the bundle in an exploratory manner; he then took the bag to the DEA office and, without a warrant, opened it and found two tinfoil-wrapped bundles that tested positive for methamphetamine.
The district court denied Johnson’s motion to suppress; on appeal the Tenth Circuit held Perry had probable cause to arrest and to seize the backpack/bundle but that (1) Perry’s tactile probing of the bundle on the bus was an exploratory warrantless search and (2) the subsequent office search was also unlawful because the bundle’s contents were not a "foregone conclusion." The drugs were suppressed, conviction vacated, and the case remanded.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Probable cause to arrest	No probable cause—observations consistent with innocent travel	Yes—moving bag, lies about luggage, lack of ID, self-search, visible oblong bundle, silence create fair probability of contraband	Probable cause existed; arrest affirmed
Was feeling the bundle on the bus a search?	Yes—Perry performed an exploratory/probing tactile examination beyond ordinary handling	No—touching was incidental to seizure and transport	It was a Fourth Amendment search (exploratory touching); unlawful without warrant
Was the DEA-office search lawful / contents a foregone conclusion?	No—the bundle was not obviously contraband; foregone-conclusion standard unmet	Yes—by then the contents were effectively certain; plain-view/foregone-conclusion applies	Contents were not a foregone conclusion; office search unlawful; bus-search taint cannot justify office search
Remedy and scope on remand	Suppress drugs and bar their use; statements may be fruit of poisonous tree	Government sought leave to advance new justifications on remand	Drugs suppressed; conviction vacated and remanded; government not permitted to raise new theories on remand; district court to decide status of Johnson’s statements

Bond v. United States, 529 U.S. 334 (2000) (prolonged or exploratory tactile examination of passenger luggage is a search)
Texas v. Brown, 460 U.S. 730 (1983) (distinctive container may make contraband’s incriminating character immediately apparent to the trained eye)
United States v. Corral, 970 F.2d 719 (10th Cir. 1992) (foregone-conclusion standard requires virtual certainty of contraband inside a seized container)
United States v. Jackson, 381 F.3d 984 (10th Cir. 2004) (foregone-conclusion where officer had already seen contraband during lawful search)
United States v. Donnes, 947 F.2d 1430 (10th Cir. 1991) (sealed or uninformative container cannot be opened without a warrant despite probable cause to seize)
United States v. Bonitz, 826 F.2d 954 (10th Cir. 1987) (container that does not reveal contents cannot be searched without a warrant)
United States v. Nicholson, 144 F.3d 632 (10th Cir. 1998) (manipulating a passenger’s bag beyond ordinary handling is a Fourth Amendment search)
Arizona v. Hicks, 480 U.S. 321 (1987) (incidental movement or minimal handling may be permitted, but probing for incriminating details requires justification)