The U.S. Treasury Department has proposed wider limits on U.S. investments in sensitive technology companies linked to countries of concern, adding biotechnology, supercomputing and hypersonic systems to rules that already cover artificial intelligence, quantum technologies and semiconductors.
Announced October 22, the draft would update the Outbound Investment Security Program under the 2025 Comprehensive Outbound Investment National Security Act. Congress passed the act as part of the fiscal 2026 defense authorization law. Under the rules, U.S. investors would have to notify Treasury about some transactions, while other transactions would be banned depending on the technology and the deal.
China, Russia and North Korea are among the countries named in news coverage. The expanded program also applies to other designated countries of concern. Reports say the proposal would cover some investments worth more than $50,000.
It would exempt many ordinary stock purchases. Treasury says the limits are meant to stop U.S. money from helping foreign adversaries develop abilities that could threaten national security. The proposal is not final.
Treasury is seeking public comments through December 7, 2026. After reviewing the comments, it will issue final regulations.