Clinton's campaign said on Monday that the arrest and allegations that Hsu engaged in an illegal investment scheme aided the decision to return the funds.
"In light of recent events and allegations that Mr. Hsu engaged in an illegal investment scheme, we have decided out of an abundance of caution to return the money he raised for our campaign, " read a statement by spokesman Howard Wolfson.
For example, by far the most famous tree scientist of modern times operates out of Hsu (Humboldt State University) in an endowed chair under my name and money.