U.S. Revokes Over 175,000 Visas; Major Mining Investments and Defense Cooperation Announced for Africa

JOHANNESBURG — In a wide-ranging series of developments affecting international security and economic partnerships, the United States has intensified its visa enforcement operations while simultaneously bolstering defense and mining collaborations across the African continent.State Department Revokes Over 175,000 Visas
The U.S. Department of State announced on August 10 that it has revoked more than 175,000 visas from foreign nationals found to be in violation of visa terms. Citing a commitment to protecting American communities, officials noted that these revocations target individuals involved in criminal activities, including assault, drug offenses, fraud, and threats to national security.
The Department highlighted specific cases involving severe criminal behavior, such as human trafficking, sexual exploitation, and fraud schemes, as well as individuals who have endorsed violence against U.S. citizens. Secretary of State Marco Rubio has further identified numerous foreign nationals as deportable on foreign policy grounds, including individuals with connections to regimes or activities hostile to U.S. interests.
Strengthening Defense Ties with Angola
In the realm of security, the United States and Angola concluded the second Joint Angolan-American Defense Cooperation Committee (DEFCOM) meeting, held in Luanda from August 5–6. The proceedings brought together senior officials from both nations, including U.S. Assistant Secretary of War for International Security Affairs, Daniel L. Zimmerman, and Angolan Minister of National Defense, Lúcio Gonçalves Amaral.
Discussions focused on deepening the bilateral partnership and reinforcing Angola’s role as a regional leader in southern Africa. This meeting builds upon the 2017 Memorandum of Understanding on Defense Cooperation and follows the successful co-hosting of the 2026 African Chiefs of Defense Conference in June.
New Mining Investments in Madagascar and Beyond
The U.S. government is also making significant moves to secure critical mineral supply chains, with the U.S. International Development Finance Corporation (DFC) announcing funding for a rare earth mine in Madagascar. The investment in Harena Rare Earths plc marks the DFC’s first mining project in the country, aiming to support the production of essential materials for advanced manufacturing and U.S. national security.
This Madagascar project is part of a broader, aggressive push by the Trump Administration to revitalize the American mining industry. During a historic industry roundtable on August 7, President Donald J. Trump announced over $2 billion in funding for critical mining projects and more than $180 million for mining school investments. These initiatives are designed to reduce reliance on foreign supply chains and strengthen domestic industrial capacity for technologies ranging from electric vehicle batteries to precision-guided defense systems.
Since January 2025, the administration has authorized nearly $40 billion in minerals deals, reflecting a strategic priority to rebuild U.S. industrial competitiveness and secure the materials necessary for modern infrastructure and defense.
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