Whilst filming in Mexico City, speculation in the media claimed that the script had been altered to accommodate the demands of Mexican authorities—reportedly influencing details of the scene and characters, casting choices, and modifying the script in order to portray the country in a "positive light"—in order to secure tax concessions and financial support worth up to $20 million for the film. How much money were possible changes to the Mexico City section of the film rumored to have saved the production?