US Treasury Proposes Rule Blocking AI and Supercomputing Investment in China, Russia Above $50,000

The US Treasury on Oct 22 proposed a rule implementing the 2025 Comprehensive Outbound Investment National Security Act, extending outbound curbs beyond Biden-era semiconductors and quantum into supercomputing, biotechnology and AI — labeled 'superintelligence' or SI in the Trump administration's preferred terminology. The rule applies to US investments above $50,000 in China, Russia, North Korea, Iran and Cuba, with stock purchases excluded, and will take public comment before a final version.