Supreme Court Case: Missouri V. Mcneely

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Facts of the Case Missouri v. McNeely was U.S. Supreme Court decision, reviewed in certiorari, on appeal from the Missouri Supreme Court, regarding a 4th Amendment exception for the warrantless search of blood as evidence following the arrest of a DUI (Driving Under the Influence) suspect. The respondent, McNeely, was arrested for DUI and refused to take a blood or breath test – a legal requirement in Missouri following a DUT arrest. The police officer took McNeely to the hospital and directed a lab technician to provide a sample of his blood without first securing a search warrant. The results of test indicated McNeely's blood-alcohol level was 0.154 percent, clearly above the legal limit as defined by statute in the State of Missouri – 0.08 percent. McNeely moved to suppress the evidence in the trial court and the court agreed because there was no emergency permitting the use of exigency as a factor in obtaining evidence without a warrant. The Government appealed, and the State Court affirmed, using the previous court case, Schmerer v. California, as guidance. A similar DUI …show more content…

Each year, DUI drivers kill thousands, injure more and cause vast amounts of property damage. Determining the alcohol content in a drunk driver's blood has great evidentiary value in DUI prosecutions. Each state has a per se law, designating a blood alcohol content (BAC) of .08 percent as legally intoxicated. However, studies indicate BAC dissipates from the body between .01 to .02 percent/hour. Gathering evidence of chemical impairment in a DUI investigation is not only critical towards a successful prosecution but time sensitive. The Court recognizes there will be cases of exigency, but are short of ruling exigency in one broad categorical term. Therefore, an arrest for DUI does not give the Government per se authority for the warrantless extraction of

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