Employers and employees must complete their respective sections of Form I9. The form is used to document verification.Use Form I9 to verify the identity and employment authorization of individuals hired for employment in the United States. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. Complete a new Section 2 and attach it to the original Form I9. For example, document delays, changes in status, or other factors. USCIS Form I-765 is available for online filing for STEM OPT applications. Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order.