United States v. Microsoft Corp.

Background

The United States sought emails from a Microsoft customer by getting a warrant under the law for stored electronic communications. Agents showed probable cause for drug trafficking, and a magistrate judge issued a warrant requiring Microsoft to disclose account contents and related records within its possession or control. Microsoft discovered the emails were stored on servers in Dublin, Ireland, and asked the court to quash the warrant for overseas data. A magistrate and then the district court denied that motion and, after a stipulation, the district court held Microsoft in civil contempt.

Reasoning

The central question was whether a U.S. email provider must turn over customer communications when those communications are stored abroad. While the case was pending, Congress enacted the CLOUD Act, stating that a service provider must comply with preservation, backup, or disclosure obligations whether the data are located inside or outside the United States. Under the new law, the Government obtained a new warrant for the same information, and the parties told the Court that the new law and warrant left no live dispute. The Court vacated the judgment and remanded with instructions to vacate the contempt finding and denial of the motion to quash, then to direct the district court to dismiss the case as moot.

Real world impact

The Supreme Court did not resolve the original legal question on the merits because Congress changed the law. The immediate effect is that the lower-court rulings are vacated and this case will be dismissed as moot. In practice, the CLOUD Act requires U.S. providers to comply with warrants for customer data even when that data is stored abroad, affecting technology companies, law enforcement, and customers with overseas data. Because this was not a merits decision, future cases may still address unresolved legal issues.