What his ruling does is deprive the N.S.A. of the argument of obviousness: the idea that what it is doing is plainly legal, plainly necessary, and nothing for decent people to worry about.
This judge is worried...
We hear a lot, he writes, about the expectation of privacy, and how it has disappeared in this day and age—don’t we all know we leave digital trails that can be followed? If we have given up on the privacy of our metadata, Judge Leon writes (quoting Smith in part), “I would likely find that is the result of ‘ “conditioning” by influences alien to well-recognized Fourth Amendment freedoms.’ ”
In other words, cynicism does not give the government a pass when it comes to its constitutional obligations. And neither should the courts. We are allowed to expect more.