The plaintiffs contended that the 2004 Amendment violated the Fourth Amendment right to be free of unreasonable searches and seizures.
“We assess the constitutionality of the 2004 Amendment by considering the “totality of the circumstances,” balancing the arrestees’ privacy interests against the Government’s need for the DNA samples. Law enforcement officials collect a DNA sample from a buccal swab of the arrestee’s mouth, a de minimis intrusion that occurs only after a law enforcement officer determines there is probable cause to believe that the individual committed a felony. Law enforcement officers analyze only enough DNA information to identify the individual, making DNA collection substantially similar to fingerprinting, which law enforcement officials have used for decades to identify arrestees, without serious constitutional objection. Moreover, state and federal statutes impose significant criminal and civil penalties on persons who misuse DNA information. On the other side of the balance, DNA analysis is an extraordinarily effective tool for law enforcement officials to identify arrestees, solve past crimes, and exonerate innocent suspects. After weighing these factors, we conclude that the Government’s compelling interests far outweigh arrestees’ privacy concerns. Thus, we hold that the 2004 Amendment does not violate the Fourth Amendment, and we affirm.”
The 2004 Amendment came into effect on January 1, 2009, and officers’ method for collecting DNA was by buccal swabs gently swept along an arrestee’s inner cheek. Failure to cooperate on part of the arrestee is a misdemeanor under the California Penal Code.
The full text of the judgment in Haskell v. Harris can be found here. https://www.ca9.uscourts.gov/datastore/general/2012/02/23/10-15152.pdf