The deck is always stacked when we debate keeping the nation safe.
Recently, we discovered that the National Security Agency is keeping an enormous file of our phone calls. In the NSA's defense, its chief, Gen. Keith Alexander, said "dozens" of potential terrorist attacks had been thwarted by that kind of effort.
The director of the FBI, Robert Mueller, suggested it might prevent "the next Boston." How do you argue with that? True, the NSA program had been up and running for years without being able to prevent the first Boston. And Alexander declined to identify the thwarted attacks, arguing that might aid potential terrorists.
But most Americans were sold. The words "terrorist attack" conjured up terrible, vivid pictures. On the other side was just a humongous computer bank full of numbers. If you didn't do anything wrong, what was the problem? Today, let's try putting a face on it in the form of Brandon Mayfield.
A Kansas native, Mayfield went to college and law school, served in the Army, married, had three children, and moved to Portland, Ore., to practice law.
His story begins with — yes! — an enormous federal database, in this case the one that collected fingerprints of Americans who served in the military.
In 2004, after terrorists bombed commuter trains in Madrid, Spanish officials found a suspicious fingerprint on a plastic bag at the scene. The FBI ran it through their files and decided, erroneously, that it matched Mayfield's. Further investigation revealed that Mayfield had married an Egyptian immigrant and converted to Islam — information the authorities apparently found far more compelling than the fact that he had never been to Spain.
Peculiar things then began to happen in the Mayfield house. His wife, Mona, returned home to find unlocked doors mysteriously bolted. Their daughter Sharia, then 12, noticed that someone had been fooling around with her computer.
"I had a desktop monitor, and it looked like some of the screws had been taken out and not put back in all the way," she said in a phone interview. "And the hard drive was sticking out."
Later, the family would learn that agents had broken into their home and Mayfield's law office repeatedly, taking DNA swabs from the bathroom, nail clippings and cigarette butts, along with images of all the computer hard drives.