[JURIST] The US Court of Appeals for the Ninth Circuit [official website] on Thursday dismissed [PDF opinion] a lawsuit challenging federal airport regulations that require passengers to show identification before boarding airplanes. Libertarian activist John Gilmore [advocacy website; case materials] had argued that the regulations, which have not been publicly disclosed, constituted an illegal search and violated his right to travel freely. The federal appeals court reviewed the regulations in private and rejected his arguments, saying that the regulations are not overly intrusive. The court noted that under the policy, passengers not wishing to show an ID can submit to searches and also said that the regulations didn't restrict Gilmore's right to travel freely because he had other ways of getting around. AP has more.