379 F. Supp. 3d 24
D.D.C.2019Background
- HSI and Secret Service used a confidential informant to arrange meetings with Odalis Castillo-Lopez to recover fraudulently obtained Treasury refund checks; agents surveilled a June 7, 2012 meeting.
- Castillo-Lopez and the defendant, Hector Cruz-Mercedes, arrived in a Volkswagen; Castillo-Lopez was arrested inside McDonald's and taken to HSI custody; Cruz-Mercedes was detained, questioned outside by Agent Cronin, initially identified as "Pedro Colon," then admitted his real name and unlawful presence.
- After the arrests, agents impounded and later searched the vehicle at a federal garage, finding an envelope with ten Treasury checks, a list of names/SSNs, bank records, and other papers; latent prints from a check matched Cruz-Mercedes using prints taken when he was processed.
- Cruz-Mercedes moved to suppress evidence seized from the June 7 encounter (including fingerprints and cell phones) as fruits of an unlawful arrest and moved under Daubert to exclude the government fingerprint expert; the district court ruled from the bench, then issued this memorandum explaining its rulings.
- The court suppressed the defendant’s post-detainment statements to Agent Cronin beyond the initial booking ID, and suppressed the physical cell phones seized from Cruz-Mercedes, but denied suppression of fingerprints, phone records, and vehicle-seized papers (finding independent lawful bases or inevitable discovery).
- The court denied the Daubert challenge to the government fingerprint expert despite concerns about documentation, concluding the expert’s ACE-V methodology was admissible and reliability vulnerabilities were for cross-examination.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Standing to challenge vehicle search | Gov: Cruz-Mercedes lacked possessory interest; thus no standing | Cruz-Mercedes: he had borrowed the car and thus had reasonable expectation of privacy | Court: No standing — he was a passenger with no ownership/control, so cannot object to vehicle search |
| Lawfulness of warrantless vehicle search | Gov: Automobile exception, community-caretaking impoundment, and inventory search justified search | Cruz-Mercedes: impoundment and search lacked warrant/probable cause and thus fruits must be suppressed | Court: Search lawful — probable cause as to Castillo-Lopez’s vehicle, plus impoundment/inventory valid; evidence from vehicle admissible |
| Admissibility of fingerprints and cell phones seized from Cruz-Mercedes | Gov: Even if initial statements were suppressed, fingerprints and phone records would have been inevitably discovered via lawful investigation | Cruz-Mercedes: fingerprints and phones are fruits of unlawful arrest and must be suppressed | Court: Suppressed the physical phones and the defendant’s incriminating statements, but admitted fingerprints and phone records under inevitable discovery; physical phones suppressed |
| Admissibility of fingerprint expert testimony (Daubert) | Gov: Sgt. Costa used ACE-V and MSP protocols; testimony reliable | Cruz-Mercedes: Sgt. Costa failed to follow SWGFAST documentation standards and the latent print was unsuitable — testimony unreliable | Court: Denied motion — ACE-V accepted; documentation gaps affect credibility but go to weight, not admissibility |
Key Cases Cited
- Daubert v. Merrell Dow Pharm., 509 U.S. 579 (court must ensure scientific testimony is relevant and reliable under Rule 702)
- Wong Sun v. United States, 371 U.S. 471 (fruits of unlawful arrest may be suppressed)
- Katz v. United States, 389 U.S. 347 (reasonable expectation of privacy test for Fourth Amendment standing)
- Rakas v. Illinois, 439 U.S. 128 (Fourth Amendment rights are personal; standing limits suppression)
- California v. Acevedo, 500 U.S. 565 (automobile exception to warrant requirement)
- Carroll v. United States, 267 U.S. 132 (foundational rule for vehicle searches without warrant)
- California v. Carney, 471 U.S. 386 (lower privacy expectations in vehicles)
- South Dakota v. Opperman, 428 U.S. 364 (inventory-search exception)
- Colorado v. Bertine, 479 U.S. 367 (inventory searches need reasonable procedures)
- Terry v. Ohio, 392 U.S. 1 (stops and reasonable-suspicion standard)
- Miranda v. Arizona, 384 U.S. 436 (custodial-interrogation warnings required)
- Pennsylvania v. Muniz, 496 U.S. 582 (booking-question exception to Miranda)
- Nix v. Williams, 467 U.S. 431 (inevitable discovery doctrine)
- Dunaway v. New York, 442 U.S. 200 (transporting a suspect can convert a stop into an arrest)
- New York v. Belton, 453 U.S. 454 (scope of search incident to arrest in vehicle context)
- Arizona v. Gant, 556 U.S. 332 (limits on vehicle searches incident to arrest)