This unit examines why the numbers of Mexican immigrants in English as a Second Language (ESL) classes are increasing. In addition, the unit seeks to use cultural information gathered from the Fulbright experience to enrich ESL U.S. history classes with units on Mexico. As students learn about U.S. history, they also gain a basis for comparing the governments of the countries. A 15-item bibliography of recent publications supports the unit. Classroom suggestions for use of the materials are included. (EH)