To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. However, you can file many USCIS forms online.You must present a photo ID, such as your passport, when purchasing a money order. Filling Out a Money Order to Pay the Form I-765 Filing Fee. 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'. This article provides information on the different payment methods available for paying the filing fees, along with instructions for each method. Do NOT sign the back of the money order. Leave that portion entirely blank. How to Fill Out Form I-945. 1. Type or print legibly in black ink. 2.