powerline22 writes "John Gilmore, the millionare who cofounded the EFF, has been prohibited from travelling because he refused to show an ID while boarding an airplane. He's been under this self-imposed ban since 2002. From the article: "The gate agent asked for his ID. Gilmore asked her why. It is the law, she said. Gilmore asked to see the law. Nobody could produce a copy. To date, nobody has. The regulation that mandates ID at airports is 'Sensitive Security Information.' The law, as it turns out, is unavailable for inspection. What started out as a weekend trip to Washington became a crawl through the courts in search of an answer to Gilmore's question: Why?"