This study documents Hmong's involvement in the Secret War in Laos, their refugee exodus from Laos to the refugee camps in Thailand, and the challenges to find third countries to take Hmong refugees. At the time, Hmong and other highlander refugees from Laos were considered unsuitable to be resettled into the United States. He provides detailed research on the adaptation of Hmong Americans to their new lives in the United States, facing discrimination and prejudice, and the advancement of Hmong Americans over the past 40 years. He presents the Hmong American community as an uprooted refugee community that grew from a small population in 1975 to more than 300,000 by the year 2015; spreading to all 50 states while becoming a diverse and complex American ethnic community. To get better insight into their diversity, complexity, and adaptation to different localities, Kou Yang uses the Hmong communities in Montana, Fresno and Denver as case studies. The progress of Hmong Americans over the past 4 decades is highlighted with a list of many achievements in education, high-tech, academia, political participation, the military and other fields. Readers of this book will gain a deeper understanding of the challenges, complex and diverse experience of the Hmong American community. They will also obtain insight into the overall experience of the Hmong, an ethnic people of Diaspora, found in Asia, the Americas, Africa, Australia, and Europe. They are like bristle-cone pines on the rock that have been exposed to all types of weather, climate and conditions, but they won't die.