; (2) oversee the adjudication of immigration benefits and naturalization applications and petitions, applicant interviews, naturalization ceremonies, and background checks for applicants, petitioners, and beneficiaries of petitions for benefits; (3) ensure the integrity of processing that occurs at the field offices; and (4) carry out further duties as assigned or delegated by the Director, which are within the statutory authority of United States Citizenship and Immigration Services. (k) Refugee, asylum and international operations directorate There is established within United States Citizenship and Immigration Services a Refugee, Asylum and International Operations Directorate. There shall be at the head of the Refugee, Asylum and International Operations Directorate an Associate Director who shall— (1) oversee refugee application adjudication and interviews; (2) oversee asylum application adjudication and interviews; (3) ensure the integrity of application processing that occurs under the Refugee, Asylum and International Operations Directorate’s authority; and (4) carry out further duties as assigned or delegated by the Director, which are within the statutory authority of United States Citizenship and Immigration Services. (l) Service center operations directorate There is established within United States Citizenship and Immigration Services a Service Center Operations Directorate. There shall be at the head of the Service Center Operations Directorate an Associate Director who shall— (1) oversee and manage the United States Citizenship and Immigration Services Service Centers responsible for adjudicating petitions that do not require applicant interviews; (2) ensure the integrity of processing that occurs at the Service Centers