A filing fee is required for many immigration forms. If you do not submit the correct fee, we will reject your form.This article provides information on the different payment methods available for paying the filing fees, along with instructions for each method. If the money order asks for the recipient address, you should list the address where you are mailing your application. Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order. The 'Pay to the order of' line should say 'US Department of Homeland Security' and the memo should say something like 'I-751 application and biometrics'. Completing a check or money order, USCIS should provide aids to customers making payments. For example, the Ombudsman recommends providing. I've just received a I797 rejection letter from USCIS for the following reason(s): The payment amount is incorrect, or has not been provided.