On the last day before its 2019 summer recess, the U.S. Supreme Court decided in Mitchell v. Wisconsin that a warrant is generally not required to draw blood for a blood alcohol content (BAC) test from an unconscious suspect.1 However, because a majority of the court could not agree on an explanation for the outcome in this case, the most prudent course for officers is still to get a warrant before conducting a BAC test when possible.
