This book takes a look at border relations between the U.S. and Mexico in a fresh, new way, describing the historical, cultural and political forces that have shaped the relationship between San Diego and Tijuana and led to what has been described as "the most dynamic cross-border community in the world." Far from a dry, academic tome, this book is filled with vivid stories of visionary people who helped create the thriving mega-region that San Diego and Tijuana are today. I didn't know Tijuana, population 2 million, is bigger than San Diego and a center of factories making TVs, trucks and medical equipment with high-tech manufacturing plants. Or that Deborah Szekely, the founder of Rancho La Puerta and the Golden Door spa, is the person with whom the binational partnerships started back in the 1930s. Those SENTRI, TSA Precheck and Global Entry passes we use at airports? These electronic passes were originally developed for this very border, to allow hundreds of thousands of commuters a day to cross legally to work, school and more. This book demonstrates the benefits of porous, but securely managed borders. Best of all, it reads like a fiction book.