The INS was authorized to handle all the legal and illegal immigration and naturalization issues. The purpose of INS was to protect and enforce the laws of naturalization and handle the process of an individual becoming a citizen of United States. The INS was divided into three new agencies called USCIS (United States Citizenship and Immigration services), CBP (Customs Border and Protection), and ICE (Immigration and Customs Enforcement), all under the purview of the newly established Department of Homeland Security.