Re: And the next chapter.....
Yes, it does matter.
First of all, it's unlikely to be overturned by SCOTUS, because it a 4-4 decision would mean the appeals court's decision stands. Secondly, it might seem like a tiny thing to you or me, but spooks hate having to apply for warrants. Not because it takes time, but because it creates a paper trail. The EU has always offered the US fast track, rubber stamp warrants but the US has repeatedly declined preferring to exercise extraterritoriality.