The Regional Transportation Authority filed a lawsuit against two of the world’s largest airlines that are running sham business operations. These sham operations have deprived Chicago and Cook County taxpayers, as well as public transportation agencies, of nearly $300 million over the last seven years. The RTA is alleging that United Airlines and American Airlines operate sham offices in Sycamore, IL that they use to avoid paying higher taxes from their actual offices in Chicago. These small, part-time offices are rarely occupied and, in at least one case, don’t appear to even have a computer. But both multi-billion dollar companies claim they purchase their jet fuel – one of their largest expenses – from those offices.