Pretty spot on (HT: RCP):
For too many liberals, all secret intelligence activities are “fruit,” and bitter fruit at that. The government is presumed guilty of illegal electronic eavesdropping until proven innocent. This sort of civil-liberties fetishism is a hangover from the Vietnam era, when the Nixon Administration wildly exceeded all bounds of legality—spying on antiwar protesters and civil rights leaders…
…At the very least, the Administration should have acted, with alacrity, to update the federal intelligence laws to include the powerful new technologies developed by the NSA.
But these concerns pale before the importance of the program. It would have been a scandal if the NSA had not been using these tools to track down the bad guys. There is evidence that the information harvested helped foil several plots and disrupt al-Qaeda operations.
There is also evidence, according to U.S. intelligence officials, that since the New York Times broke the story, the terrorists have modified their behavior, hampering our efforts to keep track of them—but also, on the plus side, hampering their ability to communicate with one another.