The First Geofence Warrant Case Reaches the Federal Court of Appeals

In March 2022, I had a long post on the district court's ruling in United States v. Chatrie, the first federal district court ruling on geofence warrants and the Fourth Amendment.  Today the Fourth Circuit held oral argument in the case, which you can listen to here starting at about 1:10:

I posted my oral argument impressions on X, and I thought I would summarize my thoughts here, too.