Whether a warrantless search incident to a lawful arrest may extend to the arrestee's entire home.
Holding
No. A search incident to arrest is limited to the arrestee's person and the area within the arrestee's immediate control—the area from which the arrestee might obtain a weapon or destroy evidence.
Reasoning
The Fourth Amendment generally requires police to obtain a search warrant before searching a home. That requirement places a neutral magistrate between law enforcement and the citizen, preventing officers from deciding for themselves when a broad invasion of domestic privacy is justified. The burden rests on the government to establish a recognized exception to the warrant requirement.
A lawful arrest creates two concrete necessities that justify a limited warrantless search. Officers may search the person arrested to remove weapons that could be used to resist or escape, and to prevent concealment or destruction of evidence. The same safety and evidence-preservation concerns justify searching the area within the arrestee's immediate reach, such as a nearby table or drawer from which the person could grab a gun or destructible evidence.
Those justifications do not support a routine exploratory search of rooms beyond the place of arrest, or a wholesale search of closed or concealed areas even in that room. Once police search beyond the area the arrestee can actually reach, the search resembles the general rummaging that the Fourth Amendment was designed to prohibit. Absent another established exception, officers must obtain a search warrant for that broader search.
The Court rejected the broad understanding of United States v. Rabinowitz and Harris v. United States, under which an arrest could authorize a search of premises under the arrestee's general possession or control. That approach lacked a principled stopping point: if an arrest in a home justified searching beyond the arrestee's reach, it could justify searching the entire house. The Court overruled those decisions insofar as they conflicted with the immediate-control rule.