I would have to say our electronic intelligence gathering is probably pretty sophisticated and gathers lots of stuff. The sad thing about intelligence gathering is that to publically discuss the successes would be self defeating by tipping what had been stopped by what means.
Every leak, sadly, tips the terrorist element - whether among us or on foreign shores - as to what we are able to do and how successful we are at doing it. I would like to think this is why Pelosi and Reid did not come forward after being briefed as to NSA surveillance methods.
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