What I don't understand is this: If the government wants to search your house, they show up at the door and show you a warrant. You can inspect the warrant - it's not secret. Granted, they're going to search your house anyway, but at least you know about it.
Except in truly extraordinary circumstances, you should be informed if your government has requested access to any of your private information.
This apparently goes even farther: not only have companies not been allowed to inform their customers, they haven't even been allowed to generally say that such information has ever been requested about anyone. That is seriously into dystopian territory.