The North American Commission for Environmental Cooperation is studying the denunciations against the construction of an international airport near the Mexican capital. The Commission, created under the North American Free Trade Agreement (NAFTA), has the power to request the cancellation or modification of the project, which is already at the contract bidding stage.

Residents of Texcoco, the site chosen for the new airport, say the decibel levels that the airplanes will produce violate existing standards. The government of Vicente Fox has stated that the rules on noise pollution do not apply to aircraft. Fox hopes to inaugurate the largest project during his presidency, by 2006.