From 1939 to 1973, nine million persons immigrated to the United States from "all of the countries of the world". During that same period more than seven million illegal Mexican aliens were apprehended and deported to Mexico. Most of these illegal aliens enter the U.S. economy as workers, whereas almost half of the legal Mexican immigrants are dependents. The movement of Mexicans to the U.S. has been the combined result of both "pull" and "push" forces. The "pull" forces are the obvious difference between the economies of the U.S. and Mexico, the cultural affinity existing between many Mexicans and Mexican Americans, the migration policy of the U.S. toward Mexico, the anomaly of the current state of the law in the U.S. with respect to the employment of illegal aliens, and the lure of what is perceived to be a "promised land". "Push" forces include the incidence of poverty throughout Mexico, the strong trend throughout Mexico of rural and urban migration, and Mexico's lack of national attention directed to the people's plight. The massive flow of illegal immigrants has caused, and will continue to cause a serious disruption in the normal labor force adjustment processes throughout the Southwest and, increasingly, in some northern cities. The group that probably suffers the most is the Chicano of the Southwest who has to compete with these workers. Therefore, a number of policy changes are urgently needed, i.e., the elimination of the immunity of employers from prosecution when they employ illegal aliens; an increase in the manpower and budget of the Immigration and Naturalization Service to a level commensurate with the scale of its responsibilities. (NQ)