Latest posts in category Evidence on North Carolina Criminal Law Blog

I admit that I may have a problem. I am dedicated to (perhaps obsessed with) the pursuit of a legal theory that satisfactorily squares the doctrine of implied consent with the Fourth Amendment. A thousand Westlaw searches later, I have yet to find analysis such an analysis by a court. So I was a little surprised when the United States Court of Appeals for the Eighth Circuit explained earlier this summer that the Supreme Court determined more than thirty years ago in South Dakota v. Neville, 459 U.S. 553 (1983), that implied consent testing carried out under threat of license revocation comported with the Fourth Amendment. Did I miss something?

The court of appeals gave the green light last week for law enforcement officers to continue to testify as scientific experts in DWI cases involving retrograde extrapolation–notwithstanding the legislature’s amendment of Rule 702 to adopt the Daubert standard. The court held in State v. Turbyfill that a field technician for the Forensic Test for Alcohol Branch of DHHS (FTA), who was trained as a law enforcement officer and chemical analyst (which authorized him to conduct implied consent testing on breath testing instruments), was properly allowed to testify about a retrograde extrapolation calculation he performed using an FTA form. The technician’s inability to explain whether the rate he used to make the calculation was an “average,” a “mid-point,” or a “conservative” rate—he used all three terms to describe it—did not disqualify him as an expert since he “provided the trial court with a list of some thirty-nine articles . . . regarding blood alcohol research,” and “with North Carolina cases in which this Court upheld the use of retrograde extrapolation to establish blood alcohol content.”

The Fourth Circuit just decided United States v. Graham, an important case about law enforcement access to cell site location information (CSLI). This post summarizes the case, explains its importance for North Carolina proceedings, and puts it in context in the broader debate about this type of information.

In my 23-year career as a lawyer no case has had more impact on the criminal justice system than the U.S. Supreme Court’s decision in Crawford v. Washington. That case radically revamped the analysis that applies for confrontation clause issues, holding that “testimonial” statements by people who don’t testify at trial are not admissible unless the prosecution establishes both unavailability and a prior opportunity to cross-examine. More than 10 year after Crawford, courts are still struggling with the meaning of the key term “testimonial.” In one recent case the Court of Appeals had to decide whether DMV records are testimonial under the new Crawford analysis.

On June 18^th the U.S. Supreme Court decided Ohio v. Clark, 576 U.S. __, 135 S. Ct. 2173 (2015), holding that a child abuse victim’s statements to his preschool teachers were non-testimonial under the Crawford confrontation clause analysis. As the first Crawford case addressing statements by a child victim, Clark is an important decision for child abuse prosecutions. Also, because it’s the Court’s first case assessing the testimonial nature of statements made to persons other than the police or their agents, it has broader significance for the Crawford analysis.

Don’t call the School of Government next week. We’ll all be out. Next week is conference-time for many of the court officials we serve, and we will be traversing the state (driving the speed limit at all times, of course) to speak at various legal conferences. Case updates are a perennial staple of these conference agendas, so I’ve been reviewing last year’s cases with a particular focus on impaired driving.  A number of opinions address issues that are frequently litigated in DWI cases, so I thought I’d share the highlights with you in a two-part post.  This post reviews the past year’s jurisprudence on implied consent testing and compelled blood draws.  Tomorrow’s post will review the recent case law on reasonable suspicion and probable cause for DWI.

The state supreme court recently reversed a death sentence and a first-degree murder conviction because the State presented “an excessive amount” of otherwise admissible Rule 404(b) evidence. How much is too much?

In most DWI cases, the State obtains evidence of a defendant’s alcohol concentration from a breath-testing machine.  In order for the results of such a breath test to be admissible at trial, the State must follow the procedures set forth in the implied consent statutes, G.S. 20-16.2 and G.S. 20-139.1. Those statutes require, among other things, that a suspect be advised of his right to refuse testing and the consequences of such a refusal and that he be afforded an opportunity to contact a witness to observe the testing. Less frequently, a law enforcement officer will request that a person charged with an implied consent offense such as impaired driving submit to a blood test. Like the breath test results, the analysis of the defendant’s blood sample obtained pursuant to such a request is admissible at trial only if the State follows the procedures set forth in the implied consent statutes.  If the request for a blood test follows an earlier request for a breath test, then the officer must re-advise the suspect of his implied consent rights before asking for consent.  None of these rules apply, however, when blood is withdrawn pursuant to a search warrant.

I’m happy to announce that my book on digital evidence is now available. There are five chapters, covering (1) search warrants for digital devices, (2) warrantless searches of digital devices, (3) law enforcement access to electronic communications, (4) tracking devices, and (5) the admissibility of electronic evidence.

Over the weekend, the Washington Post ran a story that begins as follows:

The Justice Department and FBI have formally acknowledged that nearly every examiner in an elite FBI forensic unit gave flawed testimony in almost all trials in which they offered evidence against criminal defendants over more than a two-decade period before 2000.

Of 28 examiners with the FBI Laboratory’s microscopic hair comparison unit, 26 overstated forensic matches in ways that favored prosecutors in more than 95 percent of the 268 trials reviewed so far, according to the National Association of Criminal Defense Lawyers (NACDL) and the Innocence Project, which are assisting the government with the country’s largest post-conviction review of questioned forensic evidence.