Sen. Ted Cruz, chairman of the Committee on Commerce, Science and Transportation, has urged the Federal Aviation Administration (FAA) to review millions of dollars in federal grants to Denver International Airport (DIA) after the city rejected a contract with Key Lime Air, an aviation company that works with U.S. Immigration and Customs Enforcement. Cruz alleges that the City Council's vote to reject the contract violated DIA's grant agreements with the FAA. If the FAA agrees with Cruz's assessment, it could impact the airport by up to $90 million to $385 million. The airport's budget is separate from the rest of the city's finances and relies on self-generated revenue from fees and other income.