Bullcoming v. New Mexico

131 S. Ct. 2705 (2011)

Quick Summary

Donald Bullcoming (defendant) was convicted of aggravated DWI based on a forensic lab report. At trial, his Sixth Amendment rights were challenged when the State introduced his BAC results without calling the analyst who performed the test. Instead, another scientist testified about the testing procedures.

The issue centered on whether this violated Bullcoming’s right to confront witnesses against him. The United States Supreme Court concluded that presenting such evidence without testimony from the analyst who conducted the test violated the Confrontation Clause, reversing and remanding the case.

Facts of the Case

Donald Bullcoming (defendant) was arrested under suspicion of driving while intoxicated. A blood sample was taken and analyzed by the New Mexico Department of Health, Scientific Laboratory Division (SLD), where analyst Curtis Caylor confirmed Bullcoming’s blood-alcohol concentration (BAC) was significantly over the legal limit.

At trial, the State of New Mexico (plaintiff) did not call Caylor to testify but instead introduced his report and had another scientist, Gerasimos Razatos, testify about the results, despite Razatos not having been involved in Bullcoming’s specific test.

Bullcoming objected, claiming this violated his Sixth Amendment right to confront witnesses against him. The trial court admitted the report as a business record, and Bullcoming was convicted. The New Mexico Court of Appeals and Supreme Court upheld the conviction, with the latter acknowledging the report as testimonial but finding no Confrontation Clause violation since Razatos could discuss the testing machine and procedures.

Procedural Posture and History

  1. Bullcoming was arrested and charged with aggravated DWI based on a blood test analyzed by SLD.
  2. At trial, the State introduced the blood test report without calling the analyst who conducted the test, over Bullcoming’s Sixth Amendment objection.
  3. The trial court admitted the evidence as a business record; Bullcoming was convicted.
  4. The New Mexico Court of Appeals upheld the conviction.
  5. The New Mexico Supreme Court affirmed, interpreting the Confrontation Clause as not violated by admission of the report.
  6. Bullcoming appealed to the United States Supreme Court, which granted certiorari.

I.R.A.C. Format


Whether admission of a forensic lab report through testimony of a scientist who did not perform or observe the test violates the defendant’s Sixth Amendment Confrontation Clause rights.

Rule of Law

According to the Sixth Amendment’s Confrontation Clause, Testimonial statements of witnesses absent from trial can only be admitted where the declarant is unavailable, and the defendant has had a prior opportunity to cross-examine them.

Reasoning and Analysis

The Supreme Court analyzed whether the SLD report introduced at trial was testimonial and whether Razatos’ testimony could substitute for Caylor’s absence. The Court recognized that Caylor’s report included certifications regarding the integrity and protocol adherence of the blood sample analysis, making it testimonial since it was analogous to witness testimony at trial.

The Court rejected the argument that Razatos could serve as a substitute because he could not attest to what Caylor knew or observed during the analysis. It emphasized that under Crawford v. Washington and Melendez-Diaz v. Massachusetts, the Confrontation Clause requires the person who made the testimonial statement to be confronted unless they are unavailable and there was a prior opportunity for cross-examination.


The United States Supreme Court reversed the New Mexico Supreme Court’s judgment, holding that Razatos’ testimony did not satisfy the Confrontation Clause, and remanded the case for further proceedings consistent with its opinion.

Dissenting Opinions

Justice Kennedy, joined by Chief Justice Roberts and Justices Breyer and Alito, dissented, arguing that requiring the presence of the technician who prepared a forensic report would impose an undue burden on prosecutors and state resources without significantly improving the accuracy of trials.

Key Takeaways

  1. The Sixth Amendment’s Confrontation Clause requires that any testimonial evidence against a defendant must be presented by a witness who can be confronted unless they are unavailable and there was prior opportunity for cross-examination.
  2. A forensic laboratory report is considered testimonial and thus subject to Confrontation Clause protections.
  3. The testimony by an expert witness cannot substitute for testimony from the analyst who personally conducted or observed a forensic analysis when such analysis is used as evidence in criminal proceedings.

Relevant FAQs of this case


Last updated

Was this case brief helpful?

More Case Briefs in Evidence