Big Brother may not be listening, but he's watching: Why metadata snooping is legal

The debate about the NSA spying program feels like a bad game of charades. Members of Congress and leaders of three-letter agencies keep saying how much they welcome public debate about spying, then immediately regretting that they're unable to talk in public about it. Winks and ear pulls follow. But one phrase has permeated the discussion over and over."Nobody is listening to your phone calls."It...