Getting beyond the "political correctness" argument for what happened at Fort Hood:
The most-heard reason for the possible failure is political correctness. No doubt. But Sen. Lieberman's committee should avoid making this its main line of inquiry, because that is a problem without a policy fix. It minimizes the real problem.
The problem is confusion. The combatants at each end of the spectrum in the war over the war on terror know exactly what they think about surveilling suspected terrorists. But if you are an intel officer or FBI agent tasked with providing the protection, what are you supposed to make of all this bitter public argument? What you make of it is that when you get a judgment call, like Maj. Hasan, you hesitate. You blink.
Now everyone thinks the call was obvious. But it wasn't so obvious before the tragedy. Not if for years you have watched a country and its political class in rancorous confusion about the enemy, the legal standing of the enemy, or the legal status and scope of the methods it wants to use to fight the enemy.
In war, uncertainty gets you killed. It just did.
Now that we're almost a year into a new administration, maybe some people can get over their Bush-Cheney hatred long enough to acknowledge that we really are still in a war with enemies that still do wish us great harm.