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. Decide on the money order amount. Please complete the "Paid to the Order of" section with "US Department of Homeland Security". Cashier's checks may become void after a certain period of time. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. The email will include your receipt number beginning with the letters IOE. We encourage you to save this email for your records. Gov and reviewed the instructions.