A filing fee is required for many immigration forms. If you do not submit the correct fee, we will reject your form.To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. Decide on the money order amount. This page will teach you about the USCIS credit card form, G1450 issues, reasons for G1450 rejection, and much more! 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. Leave that portion entirely blank. Below is an example of a money order from Western Union: Locations in Knoxville, TN where money orders can be purchased. Receipt No.: EAC180XXXXXXX.