From the San Diego Union-Tribune:
In the past, large families and the resulting economic necessities pushed many Mexicans to head northward, said Ruben Rumbaut, an expert in international migration at the University of California, Irvine. Rumbaut said U.S. leaders need to recognize the metamorphosis occurring south of the border and how it may be driving immigration even more powerfully than factors in the U.S. "Mexico is a middle-income country and as economic development occurs and as the fertility rate goes down and the education level goes up, Mexico is going to reach a different development state that will significantly reduce the need of its own population to cross into the U.S.," Rumbaut said. "That will coincide with the time when there will be a big need (for workers) in the U.S." as baby boomers retire.

For the full story, please visit http://www.signonsandiego.com/news/2011/jul/07/illegal-immigration-mexic....