Make sure to write the amount of payment in words as above. For more information, please visit our Frequently Asked Questions page.A filing fee is required for many immigration forms. USCIS accepts fee payments through a check, money order, or credit card authorization form. Please note that we are filing a fee waiver request with this application. A check or money order for the filing fee payable to "U. S. Department of Homeland Security" for the STEM OPT application fee. The emphasis is mine. Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order.