The Atzlan movement that wants to take it back for Mexico overlooks the fact that, at the time of the Mexican American War, there were fewer than 75,000 (Mexican) people living in California, New Mexico, Arizona, Texas, and parts of Colorado, Kansas, Oklahoma and Utah. Only after the Americans had made it a prosperous, productive area, despite a lack of water, did the Mexicans renew their interest in actually living there, as opposed to claiming it as territory.Make that more like 10,000. Maybe we should claim the moon since some Americans once walked on it.