H. Michael Steinberg has 42+ years of experience practicing Colorado criminal law. Mr. Steinberg strives to stay current with the ever changing aspects of criminal law issues and updates resulting in his extensive knowledge of successful criminal defense as well as appellate work. He is also an active member of the National Association of Criminal Defense Lawyers, the Colorado Criminal Defense Bar Association, the Colorado Trial Lawyer's Association, and the Colorado and Arapahoe Bar Associations.

Articles Posted in : Drug Dog Sniff Ruling: U.S. v. Ostertag

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Drug Dog Sniff Ruling: U.S. v. Ostertag

Introduction

On September 8, 2026, the Tenth Circuit Court of Appeals issued a published opinion in United States v. Ostertag, No. 25-8055, holding that a drug-detection dog sniffing the outside of a car during a traffic stop was not a Fourth Amendment search.

The court also held that, even if the dog’s later physical contact with the car counted as a search, officers already had probable cause. Because the Tenth Circuit covers Colorado, the ruling matters to anyone facing a drug crimes or weapons charge that began with a traffic stop and a K-9.

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