FBI Chief Mueller Questioned Legality Of Spy Program... "It's Not Our Mess, And We're Not Going To Clean It Up"...

In the anxious months after the Sept. 11 attacks, the National Security Agency began sending a steady stream of telephone numbers, e-mail addresses and names to the F.B.I. in search of terrorists. The stream soon became a flood, requiring hundreds of agents to check out thousands of tips a month.

But virtually all of them, current and former officials say, led to dead ends or innocent Americans.

Read more on The New York Times