Hopefully, it won’t take a lot of convincing for folks to understand just how wrong-headed this is. For starters, if the plaintiffs are correct, they are currently being subjected to unconstitutional government surveillance for which they are entitled to a remedy. The fact that this surveillance has a limited shelf-life (and/or that Congress was complicit in it) doesn’t in any way ameliorate the constitutional violation — which is exactly why the Supreme Court has, for generations, recognized an exception to mootness doctrine for constitutional violations that, owing to their short duration, are “capable of repetition, yet evading review.” Indeed, in this very same opinion, the Second Circuit first held that the ACLU’s challenge isn’t moot, only to then invokes mootness-like principles to justify not resolving the constitutional claim. It can’t be both; either the constitutional challenge is moot, or it isn’t.
But more generally, the notion that constitutional adjudication of a claim with a short shelf-life is “fruitless” utterly misses the significance of the establishment of forward-looking judicial precedent, especially in a day and age in which courts are allowed to (and routinely do) avoid resolving the merits of constitutional claims in cases in which the relevant precedent is not “clearly established.” Maybe, if this were the kind of constitutional question that was unlikely to recur, there’d be more to the Second Circuit’s avoidance of the issue in this case. But whether and to what extent the Fourth Amendment applies to information we voluntarily provide to third parties is hardly that kind of question, and the Second Circuit’s unconvincing refusal to answer that question in a context in which it is quite squarely presented is nothing short of feckless.