In a continued effort to centralize its operations, U.S. Citizenship and Immigration Services (USCIS) announced that non-military naturalization applicants will be required to submit their applications on Form N-400 to one of two new USCIS lockbox facilities, depending on the applicant's state of residence. The USCIS believes that this effort will further increase efficiency, decrease inconsistencies, and cut costs. For the Lockbox addresses please see the USCIS notice on Direct Mail by clicking here.