24000 Avila Rd, Laguna Niguel, CA 92677, United States+1 800-375-5283Monday to Friday 8:00 a.m. to 4:00 p.m.California Service Center (CSC) is a government agency operated by the U.S. Citizenship and Immigration Services (USCIS). The CSC is responsible for processing a wide range of immigration applications and petitions for individuals residing in the western region of the United States. The center is responsible for processing a variety of immigration-related applications and petitions, including those related to employment-based immigration, family-based immigration, asylum, and refugee status, among others. The California Service Center is one of several USCIS service centers located throughout the United States, each of which is responsible for processing immigration applications and petitions for specific regions of the country.