The U.S. Department of the Treasury has introduced final regulations to enforce Executive Order 14105, aimed at restricting U.S. investments in sensitive technologies linked to national security threats from countries like China. Effective January 2, 2025, the rules prohibit certain transactions and require notification for others involving semiconductors, quantum technologies, and artificial intelligence. U.S. persons must comply with specific obligations regarding transactions with foreign entities from countries of concern. Violations may incur civil and criminal penalties. Congressional support for further legislative action to strengthen investment screening is also evident, with proposed amendments to the FY 2025 National Defense Authorization Act.