The charges from the SEC relate to the sale of what is referred to as “unregistered and fraudulent offerings,” which raised more than $850 million for Guo, according to a press release from Wednesday.

Miles Guo, who is also known by his Chinese name Guo Wengui and sometimes as Miles Kwok, is a New York-based businessman closely related with Donald Trump’s former advisor Steve Bannon. The two have built up a substantial online presence together, and often appear in online videos where they criticize the Chinese Communist Party and its leadership.