Abstract
During the first half of 1998, the Mexican government conducted several spectacular expulsion of aliens The reasons given immediately to effect such actions have been threefold:. Expired visas, visiting areas" prohibited "(in Chiapas) and meddling . the country in political affairs But statements from higher authorities have pointed to a deeper reason: the defense of national territory, which is the defense of the nation itself Even the Foreign Secretary Rosario Green invoked the memory. los Ninos Heroes, who according to tradition died defending Chapultepec homeland unjust invasion of the United States.