Introduction: Intimate strangers

"We built a bridge across the fence" : San Diego and Tijuana become a single metropolitan area

"North America has become a shared production platform" : trade transforms the Mexican and American economies

"Production has gone up, employment has gone up, investment has gone up" : Mexican companies invest in American growth

"Creating innovative technology that solves real problems" : innovation networks expand across the border

"We can't talk about US energy independence, but we can talk about energy independence in North America" : finding a common future in energy

"We've got a huge problem here" : learning to cooperate on security issues

"Turning the Cosa Nostra into the Sopranos" : Americans and Mexicans confront organized crime together

"If I were to go back, I'd still be homesick" : migrants reshape communities on both sides of the border

"I now feel welcome in this country" : a million Americans move to Mexico

"A tsunami of Mexican talent" : how Mexican filmmakers went global

"We've gone from ethnic to mainstream" : how Mexican influence is changing America from within

Vanishing frontiers : what the future holds.