In what scenario can a stock pose national security risks that a bill is being introduced?

Just curious as to why they may have felt the need to slip this in the new “TikTok Bill.”

“Additionally, Commerce must identify and refer to the President any covered holding (e.g., stock or security) that poses an undue or unacceptable risk to U.S. national security or the security and safety of U.S. persons. If the President determines that the holding poses such a risk, the President may compel divestment of or otherwise mitigate the risk associated with the holding.”

Direct link for those curious

https://www.congress.gov/bill/118th-congress/senate-bill/686