"But here’s the thing: When judges make the laws, Congress can always go back and remake the laws. The changes the court makes are public, and so is their reasoning. Both the voters and Congress know what the court has done, and can choose to revisit it. Well, usually.
The Foreign Intelligence Surveillance Court (FISA court) that governs the national surveillance state is also remaking the law. But it’s remaking the law in secret. The public has no opportunity to weigh in, and Congress can’t really make changes, because few know what the court is deciding, and almost no one can discuss the decisions without endangering themselves."