USCIS is a government agency responsible for managing and processing immigration benefit requests. It is primarily funded by fees charged to applicants and petitioners. These fees are deposited into the Immigration Examinations Fee Account (IEFA), which represents the majority of USCIS' budget. The agency's mission is to uphold America's promise as a nation of welcome and possibility, serving with fairness, integrity, and respect. USCIS also operates regional accounts on Twitter to provide updates and information.