Illegal fund-raising refers to the behavior that a unit or individual raises funds from the public by issuing stocks, bonds, lottery tickets, investment fund securities or other creditor's rights certificates without the approval of the relevant departments in accordance with legal procedures, and promises to repay the principal and interest to investors in cash, in kind or in other ways within a certain period of time.
Your husband does some business-related work, dealing with documents related to government departments. He will be fine if he doesn't participate in illegal fund-raising activities.