The Department of Homeland Security’s (DHS) immigration services department (USCIS) is the relevant authority for most immigrants looking to live or work in the U.S. The agency services its clients through its website, a contact center, and several physical locations.
The federal agency’s website allows you to explore your immigration options, file your application online (available for some forms), and track your case. The contact center assists you in scheduling and rescheduling appointments, getting immigration-related information as live assistance, and/or automated help. The field offices will process your case, including an interview; arrange the oathtaking for your citizenship; and provide other information and services.