Facts
- An Ohio deputy sheriff stopped Robert D. Robinette for speeding on Interstate 70.
- After issuing a verbal warning and returning Robinette’s driver’s license, the deputy immediately asked whether Robinette had any illegal contraband, weapons, or drugs.
- Robinette denied having contraband but consented to a search of the vehicle.
- The deputy found a small amount of marijuana and a pill later identified as MDMA; Robinette was arrested and charged with knowing possession of a controlled substance.
- The trial court denied Robinette’s motion to suppress, and he was convicted.
- The Ohio Court of Appeals reversed, concluding the search stemmed from an unlawful detention.
- The Ohio Supreme Court affirmed and adopted a bright-line rule requiring officers, after a valid traffic stop, to clearly state the motorist is “legally free to go” before any consensual questioning or consent search.
Issues
- Whether the U.S. Supreme Court had jurisdiction to review the judgment where the state court referenced the state constitution.
- Whether the Fourth Amendment requires police to advise a lawfully stopped motorist that he is “free to go” before consent to search can be treated as voluntary.
Decision
- The Court held it had jurisdiction because the state court’s decision rested on federal law despite references to the state constitution.
- The Court held the Fourth Amendment does not require an officer to inform a motorist that he is “free to go” before requesting consent to search.
- The Court rejected the state court’s per se warning requirement as inconsistent with the totality-of-the-circumstances standard governing consent.
- The Court reversed and remanded for application of the correct federal standard rather than deciding voluntariness on the existing record.
Legal Principles
- Federal review is available where a state court decision appears to rest primarily on federal constitutional law, notwithstanding general or passing state-constitutional references.
- Voluntariness of consent to search is determined under the totality of the circumstances; knowledge of the right to refuse is a relevant factor but not a prerequisite.
- The Fourth Amendment generally disfavors rigid prophylactic rules for consent searches; reasonableness is assessed objectively and contextually.
- The validity of a stop or continued encounter turns on objective justification; an officer’s subjective intentions do not by themselves make an otherwise justified detention unlawful.
- States may impose more protective search-and-seizure rules as a matter of state law, but those rules must be grounded independently rather than attributed to the federal Constitution when inconsistent with federal doctrine.
Conclusion
The Court rejected a categorical “free-to-go” warning requirement for consent searches following traffic stops, holding that the Fourth Amendment measures consent by the totality of the circumstances and remanding for state courts to apply that standard.