• Treasury proposes expanding outbound-investment regulations.
• New rules target Russia, Cuba, Iran, and North Korea.
• Advanced biotechnologies and hypersonic systems added to prohibited technologies.
• Changes aim to strengthen national security.

The proposed expansion may indicate a shift in US policy towards restricting investments in critical technologies, which could have significant implications for national security and the aerospace industry. The inclusion of new countries and technologies suggests a growing concern about the potential risks of US funding in these areas, which may lead to increased scrutiny and regulation of outbound investments.