A few weeks ago I had to go back to DC yet again for the Right Online conference and it involved flying in and out of Reagan, as well as Newark. As usual, I stood in the long lines – even with my previous screening check mark on my boarding passes – and went through all the rituals of unloading some of my things and passing through a detector. When I arrived at the hotel I opened my bag to find the usual TSA greeting card indicating that they had searched my checked baggage, no matter how much of...