US officials say Kuwait Airways unlawfully discriminated against a passenger traveling on an Israeli passport by refusing to sell him a ticket for travel from New York to London. The Department of Transportation said Wednesday that an Israeli citizen complained that he was unable to buy a ticket from John F. Kennedy Airport to London Heathrow Airport through Kuwait Airways because the airline’s online booking system prevented him from selecting Israel as his passport-issuing country. The department said the airline explained that it’s against the law in Kuwait to do business with any Israeli citizen or company. However, the department said in a letter to the airline that US law forbids “unreasonable discrimination” by air carriers. The department has given the airline 15 days to respond.