GAO analyzed USCIS documentation and data for fiscal year 2015 through the second quarter of fiscal year 2020 and interviewed officials from USCIS program offices, directorates, and eight field locations and from three external stakeholder organizations. This report examines (1) what USCIS data indicate about its caseload, including its pending caseload, and factors affecting it (2) how USCIS monitors its case processing operations, including efforts to reduce its pending caseload and (3) the extent to which USCIS has implemented workforce planning strategies to address its pending caseload. GAO was asked to review issues related to USCIS's caseload. USCIS is the federal agency charged with adjudicating applications and petitions for immigration benefits, such as humanitarian relief, naturalization, and employment authorization. Identifying the resources necessary to address its pending caseload and providing the estimates to the Office of Management and Budget and Congress would better inform them about USCIS's resource needs.
USCIS has also developed four plans to reduce its pending caseload, but has not implemented or updated them to reflect funding and other resources needed to address the pending caseload. Developing a strategic workforce plan would better position USCIS to address long-term workforce challenges and reduce its growing pending caseload. However, it has not developed long-term strategies for acquiring, developing, and retaining staff. USCIS has also implemented several strategic and operating plans that include workforce-related goals. USCIS conducts short-term workforce planning by using staffing models that estimate the volume of new forms USCIS will receive for the next 2 fiscal years and the number of staff needed to address them. Developing and implementing timeliness performance measures for certain forms, particularly those with significant pending caseloads, would provide USCIS leadership with a better understanding of areas that may require improvement. Three of these four forms comprised about 41 percent of the agency's total pending caseload at the end of fiscal year 2020. However, USCIS does not have these timeliness measures for four of the seven forms that GAO reviewed. USCIS monitors its operations using performance measures, including some measures related to its case processing timeliness. Citizenship and Immigration Services (USCIS) Estimated Total Pending Caseload, Fiscal Years 2015 through 2020 USCIS officials cited several factors that contributed to longer processing times, including policy changes resulting in increases in the length of USCIS forms and expanded interview requirements insufficient staffing levels and suspension of in-person services due to the COVID-19 pandemic. GAO's analysis shows that, while the number of applications and petitions for immigration benefits (forms), such as humanitarian relief and naturalization, received by USCIS remained between about 8 and 10 million each fiscal year from 2015 through 2019, USCIS's median processing times-the median length of time from the date USCIS received a form to the date it rendered a decision on it-increased for six of the seven forms that GAO selected for review. Citizenship and Immigration Services (USCIS) indicate the agency's total pending caseload-–the number of cases awaiting a benefit decision-–grew an estimated 85 percent from fiscal years 2015 through 2020. Data from the Department of Homeland Security's (DHS) U.S.