2012-11-04

Cato: Drug-Sniffing Dogs Are Sense-Enhancing Technology


The Supreme Court heard oral argument yesterday in Florida v. Jardines, a case that examined whether bringing a drug-sniffing dog to the front door of a home looking for drugs was a Fourth Amendment search.
Having attended the oral argument (transcriptaudio forthcoming), my sense is that a majority on the Court thinks dog-sniffs at front doors (absent a warrant) go too far. But few of the justices know why. The one who does is Justice Kagan.
What rationale might the Court use to decide the case? Even after United States v. Jones threw open Fourth Amendment doctrine, the instinct for using “reasonable expectation of privacy” analysis is strong. (I’ve joked that many lawyers think the word “privacy” can’t be uttered without the prefix “reasonable expectation of.”) This is where much of the discussion focused, and Justice Breyer seemed the most firmly committed to its use.

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