Many states, including New Jersey, have an “implied consent” statute that allows police, in cases of suspected driving while intoxicated (DWI), to collect samples for chemical testing without first obtaining a search warrant, whether the suspect consents or not. This usually involves collecting a sample of the suspect’s breath, but police may also direct a medical professional to draw a blood sample without a warrant in some circumstances. A 2013 decision from the U.S. Supreme Court significantly limited the ability of police to collect blood samples without a warrant, and several state supreme courts have followed suit. New Jersey continues to allow warrantless blood draws, although they are subject to new restrictions.
Under New Jersey law, anyone “operat[ing] a motor vehicle on any public road, street or highway or quasi-public area” within the state is considered to have consented to providing a breath sample, provided that a police officer has “reasonable grounds” to suspect the person of DWI. The U.S. Supreme Court held, in 1966’s Schmerber v. California, that police may collect a blood sample without a warrant, over a person’s objection, if they believe that there is not enough time to get a warrant before evidence is lost or destroyed. This is known as the “exigent circumstances” exception. New Jersey’s Supreme Court has followed this view, most recently in State v. Adkins in 2013.
The U.S. Supreme Court reversed its Schmerber holding on exigent circumstances in a 2013 decision, Missouri v. McNeely, which held that the mere fact that alcohol metabolizes over time does not constitute exigent circumstances. Since then, several states have revisited their laws regarding warrantless blood testing. The Texas Court of Criminal Appeals, that state’s highest criminal court, ruled in November 2014 in Texas v. Villarreal that a warrantless blood draw without the suspect’s express consent violates the Fourth Amendment, rejecting the state’s argument that the defendant could be deemed to have consented. The court noted that state supreme courts in Idaho, Nevada, Tennessee, South Dakota, and Arizona have also recently concluded that implied consent laws do not justify warrantless blood draws. Continue reading