This bill clarifies and reaffirms the purposes of U.S. foreign assistance programs focused on removing landmines, unexploded ordnance, and securing weapons stockpiles in countries affected by conflict. The legislation formally names these activities after the late Senator Patrick Leahy of Vermont, who championed humanitarian demining efforts throughout his 48-year Senate career. The bill affects the State Department, Department of Defense, and U.S. Agency for International Development, which collectively have provided over $4.6 billion in such assistance to more than 120 countries since 1993. Key program goals include clearing land for agricultural use and infrastructure development, preventing weapons diversion to terrorist groups, providing medical assistance to survivors, and offering risk education to affected populations. The bill includes no specific new funding amounts or implementation timelines but establishes legislative findings about the humanitarian and security benefits of these programs, including their role in addressing food security, displacement, and migration issues.