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CODIS links together local, State, and Federal DNA databases to one another, allowing law enforcement to compare crime scene and perpetrator information not only on a local level, but on a national level (FBI, 2000). Since many criminal activities are done by repeat offenders, this can assist law enforcement in determining possible suspects, even if those suspects live in States other than their own (NIJ, 2002).
While useful tools, these databases can also lead to a number of disadvantages. Primarily, as various States attempt to comply with mandatory DNA database management, a backlog of forensic evidence has developed. In some cases, as these pieces of crime scene evidence await processing, the integrity of such delicate information can be compromised (NIJ, 2002). Furthermore, the cost of DNA analysis can be high, and some smaller local governments cannot afford to process the crime scene information (NIJ, 2002).
In addition, even though DNA evidence may support a theory of a particular suspect, DNA evidence does not supersede the statute of limitations on crime. Thus, even if a perpetrator...
As a result of this, many states are increasing or removing the statute of limitations on many crimes, including rape, sexual assault, battery, and other forms of violent crime.
DNA analysis and DNA databases allow law enforcement to identify suspects and link crime scenes, identify victims, and can be used in a court of law for prosecution. In general, these powerful new technologies are a great advantage to the criminal justice system, and with continued development, will become even more powerful in the future (FBI, 2000). While there are certain disadvantages, DNA and DNA databases are advantages to all but criminal suspects.
References
Federal Bureau of Investigations (FBI). (2000). The FBI's Combined DNA Index System Program. Washington, D.C.: Government Printing Office.
National Institute of Justice (NIJ). (2002). Using DNA to solve cold cases. Washington, D.C.: Office of Justice.
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