KEY POINTS
  • The discussion is in its preliminary stages and nothing has been decided, CNBC's source says.
  • There's also no time frame for their implementation, the source adds.
  • Restricting investments in Chinese entities would be meant to protect U.S. investors from excessive risk due to lack of regulatory supervision, the source says.

The White House is weighing some curbs on U.S. investments in China, a source familiar with the matter told CNBC. This discussion includes possibly blocking all U.S. financial investments in Chinese companies, the source said.

It's in the preliminary stages and nothing has been decided, the source said. There's also no time frame for their implementation, the source added.