Mexico D.F. (Districto Federal). The Ghosts have been ordered to participate in a Joint Op Operation designed to capture Mexican military officials engaged in illegal technology sales to Columbia's FARC rebels. The US President has joined the Canadian Prime Minister and the Mexican President in the metropolis to sign the NAJSA (North American Joint Security Agreement) a policy to control illegal immigration and the movement of drugs and terrorists in the hemisphere. During the public signing of the document the three leaders are attacked by Mexican soldiers. The Ghosts are ordered to meet up with Secret Service agents protecting the U.S. President and ensure his safety until he is extracted. While the U.S. president is on route to the Airport, the Ghosts secure the Mexican president. Thanks to the Ghosts' actions, the Mexican President will "Green light" U.S. intervention on Mexican soil in order to bring back Democracy. Unfortunately, the U.S. president never reached the Airport and is now in enemy hands??