Did you miss the recent news about the NSA tapping Google's internal server-to-server communications in real time? They don't have to ask anymore.
Edit: this one https://news.ycombinator.com/item?id=6680763
Edit: this one https://news.ycombinator.com/item?id=6680763
A few months ago they were using the "metadata" argument. Where are the prosecutions now that thats obviously BS?!