Facts
- In Kentucky, police received reports that marijuana was being grown on Ray E. Oliver’s farm.
- Officers drove past Oliver’s house to a locked gate marked “No Trespassing,” used a path around the gate, and walked more than a mile from the house to a marijuana field.
- Oliver was arrested and federally indicted for manufacturing a controlled substance.
- In Maine, police received a tip that marijuana was being grown in woods behind Richard Thornton’s residence.
- Officers entered the woods via a path between Thornton’s house and a neighbor’s, followed trails to two marijuana patches, and observed fencing and “No Trespassing” signs.
- After confirming the patches were on Thornton’s property, officers obtained a warrant and seized the marijuana; Thornton was arrested and indicted.
- The federal district court suppressed the evidence in Oliver; the Sixth Circuit reversed based on the open fields doctrine.
- The Maine trial court suppressed the evidence in Thornton; the Maine Supreme Judicial Court affirmed.
Issues
- Whether police officers’ warrantless entry onto privately owned rural land to locate and observe marijuana patches constitutes a Fourth Amendment “search.”
- Whether fences, remoteness, and “No Trespassing” signs create a constitutionally reasonable expectation of privacy in nonresidential fields or woods.
- Whether the open fields doctrine remains valid after the reasonable-expectation-of-privacy approach associated with Fourth Amendment analysis.
Decision
- The Supreme Court held, 6–3, that open fields are not protected by the Fourth Amendment.
- The Court ruled that open fields cannot support a reasonable expectation of privacy and that police intrusion into such areas is not an unreasonable search.
- The Court affirmed the Sixth Circuit in Oliver, allowing the marijuana evidence.
- The Court reversed and remanded in Thornton, rejecting suppression based on the initial warrantless entry into the woods.
Legal Principles
- The Fourth Amendment’s special protection for “persons, houses, papers, and effects” does not extend to open fields.
- Areas beyond the home and its curtilage generally do not provide the type of privacy the Fourth Amendment protects, even if privately owned and secluded.
- The curtilage (area immediately surrounding and associated with the home) remains protected; open fields are not.
- A common-law trespass by officers does not, by itself, determine whether a Fourth Amendment search occurred.
- “No Trespassing” signs, fences, and efforts to exclude the public do not convert open fields into constitutionally protected areas requiring a warrant.
Conclusion
The Court reaffirmed the open fields doctrine, holding that warrantless police entry onto privately owned rural land outside the home’s curtilage to observe contraband does not implicate the Fourth Amendment, even when the land is fenced, posted, or remote.