The Foreign Intelligence Surveillance Court has dealt with some of the most sensitive matters of national security: terror threats and espionage. Its work, for the most part, cannot be examined by the American public, by order of Congress and the president. Its work has been mostly secret, its structure largely one-sided.

„The most unusual thing is that there is a body of law that the court has created, but as a practitioner that is part of that law, we have between zero and some very limited knowledge of what that law is,“ Michael Sussmann, a former Justice Department prosecutor and current private attorney in the consumer and computer-privacy field, told Fox News. „But, it‘s the fact that there is a secret law and a secret body of law that makes it the most vexing.“