United States v. Lewis
A Seventh Circuit decision applying good faith to a pre-Carpenter cellphone tracking order and holding that a dog sniff in an exterior hotel walkway did not invade a protected area.
Executive Summary
An FBI informant provided Dewayne Lewis’s cellphone number during a cocaine-trafficking investigation. In January 2015—more than three years before Carpenter—the government obtained an order under 18 U.S.C. § 2703(d) authorizing historical and prospective cell-site information. Provider data placed Lewis’s phone within an approximately 1,099-meter radius of Greenwood, Indiana. Officers searched likely parking lots and hotels, observed Lewis’s wife deliver a duffel bag to an exterior-entry hotel room, and used a narcotics-detection dog along the room’s outdoor walkway. After the dog alerted, officers obtained a warrant and recovered cocaine and cash. The Seventh Circuit held that suppression was unwarranted. Any pre-Carpenter historical-CSLI issue was covered by good-faith reliance on the then-valid statute, and the real-time tracking likewise fell within Hammond and good-faith principles. The exterior hotel walkway was publicly accessible and not the room’s protected curtilage, so the dog sniff did not invade a reasonable expectation of privacy.
Key Holdings at a Glance
The Cocaine-Trafficking Investigation
Lewis participated in a drug-distribution organization whose leader had fled to Mexico. An informant provided Lewis’s cellphone number, and agents sought judicial process to locate him and investigate an anticipated cocaine transaction.
Cell-site information narrowed the phone’s location to the Greenwood area but did not identify a precise building. Officers combined the digital lead with conventional surveillance, checking likely parking lots and hotels until they observed a vehicle registered to Lewis and conduct consistent with a delivery.
The 2015 §2703(d) Tracking Order
The order authorized the provider to supply historical records and continue furnishing location information after issuance. At the time, §2703(d) allowed disclosure based on specific and articulable facts showing reasonable grounds to believe the records were relevant and material to an ongoing investigation.
Carpenter later held that this process was insufficient for qualifying historical CSLI and generally required a probable-cause warrant. Lewis’s order, however, was issued and executed years before Carpenter changed the governing rule.
Historical CSLI and the Absence of Evidence to Suppress
The tracking order appeared to authorize historical records beginning January 1, 2015. The government explained that Sprint did not begin providing useful data until February 3, the day Lewis was located and arrested.
Because historical CSLI was neither introduced at trial nor used to obtain other evidence, there was no historical evidence or fruit to exclude. Suppression is a remedy directed at evidence actually obtained and used through the alleged violation.
Real-Time CSLI and Hammond
The live provider data located Lewis’s phone only within a broad radius of approximately 1,099 meters. Officers still had to search the area, identify relevant vehicles and buildings, and conduct visual surveillance.
The court relied on Hammond’s refusal to categorically extend Carpenter to several hours of prospective public-location tracking. Rather than decide every constitutional question, Lewis concluded that good faith independently made suppression inappropriate.
Why the Good-Faith Exception Applied
Officer Harshman sought a judicial order under a statute that courts treated as valid in 2015. The application was not shown to contain knowing or reckless misrepresentations, and the order was not facially deficient under then-existing law.
The mere decision to seek judicial process supported an inference that the officer attempted to comply with the law. Later decisions changing the required standard did not transform that earlier reasonable reliance into deterrable police misconduct.
The Exterior Hotel Walkway
Lewis stayed in a hotel room with a door opening directly onto an exterior walkway. The corridor was used by guests, hotel staff, visitors, delivery workers, and other members of the public approaching the rooms.
The court rejected the argument that this open walkway was equivalent to the curtilage of a home. A hotel guest has strong privacy rights inside the rented room, but those rights do not automatically extend to a common or publicly accessible route outside the door.
The Narcotics-Detection Dog Sniff
Officers walked a trained dog along the exterior corridor. The dog alerted near Lewis’s room. Investigators used that fact, together with the other evidence, to obtain a search warrant.
Florida v. Jardines prohibits bringing a drug dog into the constitutionally protected curtilage of a home to investigate. Lewis held that the exterior hotel walkway was materially different because officers did not physically intrude into a protected area.
What Lewis Does—and Does Not—Establish
- It does not authorize current historical-CSLI collection under a mere §2703(d) order.
- It does not definitively classify every form of real-time CSLI as outside the Fourth Amendment.
- It relies heavily on good faith and the law existing in 2015.
- It protects the interior of a hotel room even though the exterior walkway was public.
- It does not authorize a dog sniff from private curtilage or another protected space.
- It does not override stricter state constitutional rules governing location data or dog sniffs.
Lewis Compared with Related Location Decisions
| Case | Evidence or Technique | Central Rule |
|---|---|---|
| Carpenter v. United States | Extended historical CSLI | Probable-cause warrant generally required. |
| United States v. Hammond | Several hours of real-time CSLI | No search on public-road facts; exigency and good faith also applied. |
| United States v. Lewis | Pre-Carpenter tracking order and exterior dog sniff | Good faith defeated CSLI suppression; no privacy in public exterior walkway. |
| Florida v. Jardines | Dog sniff from home’s front porch | Physical intrusion into protected curtilage was a search. |
Agency Operations Checklist
- Identify whether requested cell data is historical, prospective, or both.
- Specify the technology, expected precision, duration, and protected places it may reveal.
- Use a probable-cause warrant under current law whenever feasible.
- Corroborate broad location estimates through lawful visual surveillance.
- Before a hotel dog sniff, document the property layout and public access to the dog’s route.
- Do not cross gates, barriers, balconies, patios, or other guest-controlled spaces without authority.
- Include the dog’s training, certification, reliability, handler, route, and alert in reports.
- Preserve provider records, maps, surveillance notes, photographs, video, warrant materials, and location-data provenance.
Litigation and Review Checklist
- Determine the date of the order and the law controlling at that time.
- Separate historical data, prospective data, and information actually used.
- Trace each item of evidence to the alleged unlawful acquisition.
- Analyze constitutional validity separately from statutory and judicial good faith.
- Measure location precision, duration, frequency, and private-place exposure.
- Map the hotel walkway, access restrictions, guest control, and public use.
- Identify the dog’s precise path and whether officers entered a protected area.
- Review the final warrant for independent probable cause and accurate disclosures.
Frequently Asked Questions
Did Lewis approve warrantless historical CSLI after Carpenter?
No. The order was issued in 2015, and the court applied good faith to officers’ reliance on then-existing law.
Did the government use historical CSLI against Lewis?
The government represented that it did not use historical CSLI at trial or to obtain derivative evidence.
How precise was the real-time location?
The data placed the phone within an approximately 1,099-meter radius, requiring additional police investigation.
Was the hotel room protected?
Yes. The ruling concerned the publicly accessible exterior walkway, not the room’s interior.
Why was the dog sniff lawful?
The dog remained on an outdoor corridor where officers and members of the public could lawfully walk.
Primary Authorities and Related Law
Published appellate opinion addressing cellphone tracking and an exterior hotel dog sniff.
Read the complete opinion
Supreme Court decision requiring a warrant for qualifying historical CSLI.
Read Carpenter v. United States
Supreme Court decision treating a dog sniff from home curtilage as a search.
Read Florida v. Jardines
Stored Communications Act process governing required provider disclosures.
Read 18 U.S.C. § 2703
Final Assessment
United States v. Lewis demonstrates how multiple investigative tools must be analyzed step by step. A broad cellphone-location estimate led to conventional surveillance; activity at an exterior-entry hotel led to a dog sniff from a public route; and the alert supported a conventional search warrant. The decision’s good-faith analysis protects the 2015 tracking order but does not reduce current Carpenter obligations.