Chicago’s top Aviation official says she is fighting against a federal mandate that could cost the city millions for security, as the Transportation Security Administration plans to stop paying for security officers who staff exists from secured areas at O’Hare and Midway airports next year.

According to CBS Chicago, Aviation Commissioner Rosemarie Andolino told aldermen at a budget hearing that, due to the security taxes on airline tickets, the TSA is already being paid to do this effort, and it would cost the City of Chicago $6 million to hire security officers for the passenger exit lanes at airports.