"If the public knows X, we won't be able to use X without the public's knowledge. Further, the public might demand we get a warrant to use X, making using X wit

"If the public knows X, we won't be able to use X without the public's knowledge. Further, the public might demand we get a warrant to use X, making using X without a warrant more difficult." Well then... I guess everything the FBI does should be withheld from public scrutiny because national security.