The INS is the acronym for the Immigration and Naturalization Service, which is a part of the United States Department of Homeland Security. The INS is responsible for administering and enforcing immigration laws, including the admission, exclusion, deportation, and naturalization of aliens. The INS also works to prevent illegal immigration and to protect the rights of immigrants. The Administration Current job description involves managing the day-to-day operations of the INS, such as overseeing personnel, budgeting, and policy implementation.