“[I]t is relatively straightforward for an innocent person’s DNA to be inadvertently transferred to surfaces that he or she has never come into contact with. This could place people at crime scenes that they had never visited or link them to weapons they had never handled.”
In discussing United States v. Henning, No. 20150410 (A. Ct. Crim. App. Sep. 3, 2015), a good friend had this to say about the case and about DNA examinations which are common in military sexual assault cases.
There are many problems with this opinion.
He notes that:
He notes then the general purpose behind evidence such as DNA results.
The logical and legal purpose of using DNA evidence is to do one of two things: either match the DNA to a specific individual, or to exclude someone from the universe of potential matches. The DNA “results” in this case can do neither, so therefore, how can they be relevant under MRE 401? To “conclude” that the Accused could “not be excluded” is a nonsensical statement – other than the sample was too small to draw any scientific conclusions – which is after all why DNA testing is done in the first place.
Indeed, as the FBI itself states: