An anonymous reader writes: U.S. authorities blocked a British Muslim family from boarding a plane at London's Gatwick airport. They were flying to Los Angeles on a trip to visit Disneyworld. "U.S. Department of Homeland Security officials provided no explanation for why the country refused to allow the family of 11 to board the plane, even though they had been granted travel authorization online ahead of their planned 15 December flight." This comes at a time when prominent groups and individuals within the U.S. are arguing in favor of blocking entrance for all Muslims. The refusal, and the U.S.'s unwillingness to explain, is raising concern within the UK government. The family is out $13,340 for their plane tickets.