From the Document: "More than 40 years after the end of the Vietnam War, unexploded ordnance (UXO) from numerous conflicts, but primarily dropped by U.S. forces over Cambodia, Laos, and Vietnam during the Vietnam War, continues to cause casualties in those countries. Over the past 25 years, the United States has provided a total of over $400 million in assistance for UXO clearance and related activities in those three countries through the Department of Defense (DOD), Department of State (DOS), and United States Agency for International Development (USAID), as well as funding for treatment of victims through USAID and the Leahy War Victims fund. Although casualty numbers have dropped in recent years, no systematic assessment of affected areas has been done, and many observers believe it may still take decades to clear the affected areas. War legacy issues such as UXO clearance and victim assistance may raise important considerations for Congress as it addresses the impact of U.S. participation in conflicts around the world and how the United States should deal with the aftermath of such conflicts."
CRS Report for Congress, R45749
Congressional Research Service: https://crsreports.congress.gov/