Commentary: Mexican-Americans have deep U.S. ties - CNN.com: (CNN) -- Just about any celebration of Hispanic Heritage Month (September 15 - October 15) will highlight the diversity among Hispanics.
They come from different parts of the Spanish-speaking world, have settled in various areas of the United States, have distinctive customs and come in all shapes and colors.
But an often overlooked difference among Hispanics relates to how many generations back they trace their roots in U.S. history.
Hispanics are not just immigrants or the U.S.-born children of immigrants. They are also Americans with deep family histories in the United States. This is especially true of the Mexican-origin population, the largest Hispanic subgroup and one that has been continually replenished by immigrant newcomers for a century.
