Pretrial Identification Procedures

Witness identification can be the most compelling evidence in a criminal trial, yet it is also notoriously fallible. The constitutional rules governing pretrial identification procedures—lineups, showups, and photo arrays—exist to navigate this tension. They aim to prevent wrongful convictions by imposing due process requirements on police methods while allowing reliable evidence to reach the jury. Understanding these rules is essential for any legal professional, as they define the delicate balance between effective law enforcement and the fundamental right to a fair trial.

The Constitutional Foundations: Due Process and the Right to Counsel

The legal limits on identification evidence stem from two distinct amendments: the Sixth Amendment and the Fourteenth Amendment's Due Process Clause. Each provides different protections triggered at different times.

The Sixth Amendment guarantees the right to counsel. In United States v. Wade (1967), the Supreme Court held that this right attaches at post-indictment lineups. Once formal charges have been filed (via indictment or information), a defendant has the right to have an attorney present during any corporeal identification procedure, like a live lineup or a showup. The Court reasoned that these are critical stages of prosecution where a lawyer's presence can prevent unfairness and preserve the defendant's right to a fair trial. If the police conduct a post-indictment lineup without notifying the defendant's attorney, the identification itself is inadmissible. Importantly, this right does not extend to photographic identification procedures (photo arrays), which the Court has deemed less inherently suggestive and not a "critical stage."

Separately, the Due Process Clause of the Fourteenth Amendment acts as a broader safeguard. It applies to all identification procedures, whether conducted before or after indictment, and whether they are live or photographic. The core due process inquiry is whether the police procedure was so impermissibly suggestive that it created a "very substantial likelihood of irreparable misidentification." If a court finds a procedure violated due process, the resulting identification must be excluded from evidence. This is the primary constitutional check on suggestive police techniques.

Defining an "Impermissibly Suggestive" Procedure

Not all suggestiveness violates due process; it must be impermissibly suggestive. Courts evaluate this by examining the totality of the circumstances. The key question is whether the police acted in a way that singled out the defendant, implicitly suggesting to the witness, "This is the person we suspect."

Common examples of potentially impermissibly suggestive practices include:

• Showups: Showing a witness a single suspect, often shortly after the crime. While sometimes necessary due to exigent circumstances, they are inherently suggestive.
• Lineup or Photo Array Biases: Filling a lineup with individuals who do not match the witness's description, making the suspect stand out. For example, if the witness described a tall man with a beard, and only the suspect in a six-person lineup has a beard.
• Officer Commentary: An officer telling a witness, "We think we got the guy," or "Take a good look at number four."
• Multiple-Exposure Procedures: Repeatedly showing a witness the same suspect's photograph in different arrays.

If a defendant can demonstrate that the police procedure was impermissibly suggestive, the analysis does not end there. The court must then determine if the identification was nonetheless reliable.

The Manson v. Brathwaite Reliability Factors

In the landmark case Manson v. Brathwaite (1977), the Supreme Court established the ultimate test for the admissibility of identification evidence. Even if a procedure was impermissibly suggestive, the identification may still be admissible if, under the totality of the circumstances, it possesses sufficient indicia of reliability. The court weighs five key reliability factors:

1. The Opportunity of the Witness to View the Criminal at the Time of the Crime. How long, close, and unobstructed was the view? Was lighting good?
2. The Witness’s Degree of Attention. Was the witness a casual observer or a victim/security guard trained to pay attention?
3. The Accuracy of the Witness’s Prior Description of the Criminal. Does the suspect match the initial description given to police before the identification?
4. The Level of Certainty Demonstrated by the Witness at the Confrontation. How sure did the witness sound when making the identification?
5. The Length of Time Between the Crime and the Confrontation. A shorter interval generally supports reliability.

The court balances the corrupting effect of the suggestive procedure against these reliability factors. If the factors indicate the identification was likely reliable despite the police misconduct, the evidence can be presented to the jury, which will ultimately decide what weight to give it. This test reflects a preference for allowing juries to hear possibly reliable evidence, with cross-examination as the primary tool to expose its weaknesses.

The Remedies for Constitutional Violations

When a court finds a constitutional violation, the remedy depends on which right was infringed. A violation of the Sixth Amendment right to counsel at a post-indictment lineup results in a per se exclusion of the identification made at that lineup. Furthermore, the prosecution faces a high bar to admit any in-court identification by the same witness. They must prove by clear and convincing evidence that the in-court identification has an "independent origin"—that is, it is based on the witness's memory of the crime, not their memory of the tainted lineup.

For a due process violation, the remedy is straightforward exclusion. The pretrial identification obtained through the impermissibly suggestive procedure is inadmissible. The prosecution may still attempt to offer an in-court identification, but again, it must establish an independent basis for it, separate from the tainted pretrial procedure.

Common Pitfalls

1. Confusing the Right to Counsel with Due Process.
Mistake: Assuming the right to an attorney applies to all identification procedures. Correction: The Sixth Amendment right to counsel applies only to live, corporeal identifications conducted after the initiation of formal adversary proceedings (indictment). Due process, not the right to counsel, governs pre-indictment procedures and all photo arrays.

2. Assuming Suggestiveness Automatically Means Exclusion.
Mistake: Arguing that an identification must be excluded simply because the procedure was flawed. Correction: Under Manson v. Brathwaite, the court must conduct the full reliability analysis. An identification from a suggestive procedure can still be admitted if the court finds it was reliable based on the five-factor test. The argument should focus on how the suggestiveness overwhelms the reliability factors.

3. Failing to Object and Preserve the Record.
Mistake: Not requesting a pretrial hearing (often called a Wade hearing) to challenge the identification. Correction: Defense counsel must proactively file a motion to suppress the identification. At the hearing, they must meticulously cross-examine officers on the procedural details and elicit testimony on all five Brathwaite factors from the witness to build a record for appeal.

4. Overlooking the "Independent Origin" Doctrine for In-Court IDs.
Mistake: Believing the exclusion of a pretrial ID prevents the witness from identifying the defendant in court. Correction: Even if a pretrial ID is suppressed, the prosecution can still ask for an in-court identification if they can prove it is based on the witness's memory of the crime, not the tainted procedure. The defense must be prepared to challenge this "independent origin."

Summary

• Pretrial identification procedures are regulated by the Sixth Amendment Right to Counsel (for post-indictment lineups/showups) and the Fourteenth Amendment Due Process Clause (for all identifications).
• The core due process inquiry is whether a police procedure was impermissibly suggestive under the totality of the circumstances.
• Even a suggestive identification may be admissible if, under Manson v. Brathwaite, it is deemed reliable based on five factors: the witness's opportunity to view, degree of attention, accuracy of prior description, level of certainty, and the time lapse.
• Violations lead to suppression of the pretrial identification, and the prosecution bears the burden of proving any subsequent in-court identification has an independent origin.
• Effective advocacy requires understanding the distinct legal tests, proactively litigating suppression motions, and using cross-examination to expose the frailties of eyewitness memory to the jury.