usps 2 times I am very satisfied never disappointedOn April 8, 2024, my mother went to the post office to mail the N400 form along with the N648 i912 form to the USCIS immigration office in the state of Az. On April 9, 2024, the letter arrived safely at the USCIS immigration office the second time. My mother and I have an appointment on March 26, 2025 for our first US passport appointment. My mother paid extra for the expedited passport service. After 13 days, I received my US passport home intact and undamaged.