Make the money order payable to U.S. Department of Homeland Security. A filing fee is required for many immigration forms.If you do not submit the correct fee, we will reject your form. File both forms at the location specified for the other application or petition. For example, if you are filing Form I-765 with Form I-539 or Form I-485. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. Read the Form N400 Instructions before you decide whether or not you would like to legally change your name.