I have no doubt that revelations in the New York Times that the NSA has been conducting selective and limited surveillance of terrorist communications crossing into or out of the United States will be immensely valuable to our enemies. I also have no doubt that these and similar actions can be legal, even when conducted without warrants. How could that be? From the sound and fury of the last few days from politicians and pundits, you would think this is a development as scandalous as Attorney General Robert F. Kennedy's authorization to wiretap Martin Luther King Jr. But the legality...
