Airport security in America is broken. I should know. For 3½ years—from my confirmation in July 2005 to President Barack Obama's inauguration in January 2009—I served as the head of the Transportation Security Administration.

You know the TSA. We're the ones who make you take off your shoes before padding through a metal detector in your socks (hopefully without holes in them). We're the ones who make you throw out your water bottles. We're the ones who end up on the evening...