In an earlier blog post on a pending case in the Sixth Circuit, Warshak v. United States, I figured there was no way the court would get to the merits of the Fourth Amendment issue lurking in the case: there were no facts yet and no decided statutory law, and surely the panel wouldn’t be so reckless as to presumptively strike down a federal statute in the absence of facts or law given the procedural problems with the case. I had a funny feeling things would turn out differently when I learned who was on the panel, though, and that funny feeling turned out to be justified: the panel just issued a blockbuster decision that tries to answer how the Fourth Amendment applies to e-mail (all without any facts, amazingly) based on arguments from amicus briefs that the government didn’t address all in the context of an appeal from a preliminary injunction. Wow. More on the decision later today.
UPDATE: Here’s the key part of the opinion:
[W]e have little difficulty agreeing with the district court that individuals maintain a reasonable expectation of privacy in e-mails that are stored with, or sent or received through, a commercial ISP. The content of e-mail is something that the user