In geopolitical terms, the Asian sub-region Southeast Asia consists of ten countries that are organized under the Association of Southeast Asian Nations (ASEAN). Current member nations include Brunei Darussalam, Kingdom of Cambodia, Republic of Indonesia, Lao People’s Democratic Republic (Laos), Malaysia, Republic of the Union of Myanmar (formerly Burma), Republic of the Philippines, Singapore, Kingdom of Thailand, and Socialist Republic of Vietnam. The term Southeast Asian Americans has been shaped largely by the flow of refugees from the American War in Vietnam’ however, Americans with origins in Southeast Asia have much more diverse migration and settlement experiences that are intricately tied to the complex histories of colonialism, imperialism, and war from the late 19th through the end of the 20th century. A commonality across Southeast Asian American groups today is that their immigration history resulted primarily from the political and military involvement of the United States in the region, aimed at building the United States as a global power. From Filipinos during the Spanish-American War in 1898 to Vietnamese, Cambodian, Lao, and Hmong refugees from the American War in Vietnam, military interventions generated migration flows that, once begun, became difficult to stop. Complicating this history is its role in supporting the international humanitarian apparatus by creating the possibility for displaced people to seek refuge in the United States. Additionally, the relationships between the United States, Malaysia, Indonesia, and Singapore are different from those of other SEA countries involved in the Vietnam War. Consequently, today’s Southeast Asian Americans are heterogeneous with varying levels of acculturation to U.S. society.