2018 CO 78M
Colo.2018Background
- In 2008 Ismael Casillas, a juvenile, received a one-year deferred adjudication and was placed under juvenile probation supervision.
- A juvenile probation officer took a buccal (cheek) swab from Casillas and uploaded his DNA profile into CODIS, though Casillas was not statutorily required to provide DNA while on deferred adjudication.
- After Casillas’s case was dismissed, CODIS matched crime-scene blood from a carjacking to his profile; investigators used that match to create a photo array that led to his arrest and prosecution.
- Casillas moved to suppress the DNA-derived evidence and the photo-array ID as fruits of an unlawful search; the trial court denied suppression and a jury convicted him of criminal mischief.
- The court of appeals agreed the swab violated the statute and the Fourth Amendment but refused to suppress evidence, reasoning the probation officer performed a supervisory (non-law-enforcement) function; the Colorado Supreme Court granted certiorari.
- The Colorado Supreme Court reversed: it treated juvenile probation officers as adjuncts to law enforcement, found the swab served a law-enforcement purpose, concluded suppression would deter future unlawful DNA collection, and ordered Casillas’s conviction vacated.
Issues
| Issue | Casillas’ Argument | People’s Argument | Held |
|---|---|---|---|
| Whether evidence derived from an unauthorized buccal swab must be suppressed under the exclusionary rule | Exclusionary rule requires suppression because the cheek swab violated the juvenile DNA statute and the Fourth Amendment, so derivative evidence is fruit of the poisonous tree | Suppression unnecessary: officer acted in a non-law-enforcement supervisory role; special-needs exception and lack of evidence of deliberate misconduct weigh against exclusion | Suppression required: juvenile probation officers are law-enforcement adjuncts; swab served law‑enforcement purpose; suppression will deter illegal DNA collection and therefore is warranted |
| Whether juvenile probation officers are akin to court employees (insulating searches from deterrence-based suppression) | (Implied) Probation officer’s role implicated law enforcement duties, so deterrence can apply | Probation officer was performing a supervisory function under juvenile-court direction, like a court employee, so exclusion would not deter | Probation officers are peace officers/adjuncts to law enforcement; their collection of DNA for CODIS is inherently law-enforcement activity |
| Whether the record shows the officer relied on misinformation from a third party (which would reduce deterrence) | The record contains no indication the swab resulted from reliance on third‑party misinformation; suppression appropriate | Argued by analogy to cases where officer relied on court error (Leon/Evans) such that suppression would not deter | Court: no record of third‑party misinformation; the officer himself collected the DNA, so deterrence-targeted suppression is appropriate |
| Whether the officer’s mistake of law was objectively reasonable and thus would counsel against suppression | Mistake of law was not adequately supported as objectively reasonable; suppression appropriate (majority view) | People later argued the officer reasonably misinterpreted the statute (invoking Heien); trial-level good-faith mistake claim was not raised earlier | Court: declined to credit a reasonable‑mistake defense here (People forfeited it below); the statutory text and juvenile‑privacy context made the illegality sufficiently knowable to a reasonably trained probation officer, so exclusion applies |
Key Cases Cited
- Maryland v. King, 569 U.S. 435 (use of a buccal swab is a Fourth Amendment search)
- United States v. Leon, 468 U.S. 897 (exclusionary rule deters police misconduct, not judicial errors)
- Herring v. United States, 555 U.S. 135 (exclusionary rule applies only when police conduct is sufficiently deliberate, reckless, or systemic to warrant deterrence)
- Heien v. North Carolina, 574 U.S. 54 (objectively reasonable mistakes of law can justify searches; reasonableness inquiry relevant to remedy analysis)
- Illinois v. Krull, 480 U.S. 340 (limits on exclusion when officers enforce statutes later held invalid)
- Arizona v. Evans, 514 U.S. 1 (suppression not warranted where error traced to court employees)
- Davis v. United States, 564 U.S. 229 (reliance on binding precedent may preclude exclusion)
- Utah v. Strieff, 579 U.S. 232 (exclusionary-rule and derivative-evidence principles)
- Segura v. United States, 468 U.S. 796 (fruit-of-the-poisonous-tree and derivative-evidence doctrine)
- Elkins v. United States, 364 U.S. 206 (exclusionary rule removes incentive to disregard Fourth Amendment)
- United States v. Payne, 181 F.3d 781 (deterrence rationale: excluding evidence obtained by probation officers prevents circumvention of Fourth Amendment)
- People v. McKinstry, 843 P.2d 18 (statutory violations trigger exclusionary rule only when they also amount to constitutional violations)