In Secret, Court Vastly Broadens Powers of N.S.A.

◼ In more than a dozen classified rulings, the nation’s surveillance court has created a secret body of law giving the National Security Agency the power to amass vast collections of data on Americans while pursuing not only terrorism suspects, but also people possibly involved in nuclear proliferation, espionage and cyberattacks, officials say. - New York Times

The 11-member Foreign Intelligence Surveillance Court, known as the FISA court, was once mostly focused on approving case-by-case wiretapping orders. But since major changes in legislation and greater judicial oversight of intelligence operations were instituted six years ago, it has quietly become almost a parallel Supreme Court, serving as the ultimate arbiter on surveillance issues and delivering opinions that will most likely shape intelligence practices for years to come, the officials said.

Last month, a former National Security Agency contractor, Edward J. Snowden, leaked a classified order from the FISA court, which authorized the collection of all phone-tracing data from Verizon business customers. But the court’s still-secret decisions go far beyond any single surveillance order, the officials said.

“We’ve seen a growing body of law from the court,” a former intelligence official said. “What you have is a common law that develops where the court is issuing orders involving particular types of surveillance, particular types of targets.”