The Alien Registration Requirement (ARR) strengthens national security, promotes accountability, and upholds the rule of law. We remain committed to securing the homeland and ensuring that every alien in the U.S. is properly accounted for. Learn more about ARR: | U.S. Citizenship and Immigration Services

Understanding Your Alien Registration Number (A-Number) Brad Bernstein explains what an Alien Registration Number (A-Number) is, where to find it, and its significance in U.S. immigration processes. 📌 What is an Alien Registration Number (A-Number)? • A unique seven-, eight-, or nine-digit identifier assigned to non-citizens by the U.S. Citizenship and Immigration Services (USCIS). • Used to track your immigration records across various agencies. 📌 Where Can You Find Your A-Number? • Permanent