To authorize assistance to support activities relating to the clearance of landmines, unexploded ordnance, and other explosive remnants of war in Cambodia, Laos, and Vietnam, and to recognize the refugee and immigrant communities who supported and defended the Armed Forces during the conflict in Southeast Asia, including Hmong, Cham, Cambodian, Iu-Mien, Khmu, Lao, Montagnard, and Vietnamese Americans, and for other purposes.