"This program, Boundaries and Borderlands, introduces the case study approach of the course. Here we examine the borderland region between the regions of North America and Latin America. The first case study, Twin Cities, Divided Lives, follows the story of Concha Martinez as she crosses between the U.S. and Mexico in order to make a life for herself and her children. The second case study, Operation Hold the Line, follows up the question of cross-border migration raised in the first program. It takes a look at how U.S. border policy is shaping the lives of not only the people living in this borderland region, but in more distant U.S. and Mexican locations as well."