The Supreme Court has granted a writ of certiorari in Carpenter v. United States, agreeing to review the decision by the U.S. Court of Appeals for the Sixth Circuit holding that the Fourth Amendment permits the government to permissibly access cell-site records revealing the user's location without a warrant. The case implicates serious ongoing debates over Fourth Amendment jurisprudence and will likely make for a major Supreme Court decision.
Latest in Fourth Amendment
An EDPA magistrate judge declines to adopt the Second Circuit's holding in Microsoft regarding tech companies' obligation to comply with search warrants for emails stored overseas.
A review of legal opinions by Judge Neil Gorsuch of the Tenth Circuit Court of Appeals, President Trump's pick to fill the ninth seat on the Supreme Court, on immigration, separation of powers, the Fourth Amendment, administrative law, international law, and foreign affairs.
In a recent post here at Lawfare, April Doss argues that the Ninth Circuit’s decision in United States v. Mohamud “got it right.” In her view, the critics of the decision—myself included—are just wrong. I disagree. Here’s why I think the reasoning of the decision is hard to defend.
Today, the Department of Defense released revised procedures governing the conduct of its intelligence activities. Lawfare has a rundown of exactly what's new and what it means for DoD intelligence collection moving forward.
Office of the Director of National Intelligence General Counsel Robert Litt has published a new essay in The Yale Law Journal that will likely be of interest to Lawfare readers.
United States v. Dreyer: Suppression of Evidence Not Needed to Deter Future Violations of the Posse Comitatus Act
The Ninth Circuit ruled yesterday that an NCIS agent’s search of military and civilian computers for child pornography violated restrictions related to the Posse Comitatus Act.
We summarize key points in the majority, concurring, and dissenting opinions in Wednesday's decision from a Fourth Circuit panel—which held, among other things, that warrantless accessing of historical cell site data violates the Fourth Amendment.
Earlier today, a three-judge panel of the Fourth Circuit handed down its quite important decision in United States v. Graham.
Last summer, in United States v. Ganias, a Second Circuit panel held that the government violated the Fourth Amendment when, for two-and-a-half years, it retained digital copies of files that were outside the scope of an initial warrant and then used those files in a subsequent investigation. Applying the exclusionary rule, the Second Circuit panel vacated the defendant’s conviction. But just last week, however, the Second Circuit sua sponte granted an en banc rehearing on not only the application of the exclusionary rule but also on the Fourth Amendment question.