Thousands of economic and political refugees have resettled in Western countries in two separate waves. The first wave resettled in the late 1970s, mostly in the United States, after the North Vietnamese and Pathet Lao takeovers of the pro-US governments in South Vietnam and Laos respectively. The Lao Veterans of America, and Lao Veterans of America Institute, helped to assist in the resettlement of many Laotian and Hmong refugees and asylum seekers in the United States, especially former Hmong veterans and their family members who served in the "U.S. Secret Army" in Laos during the Vietnam War.