USCIS published this technical appendix to accompany the series of U visa reports it published in 2020. The reports are: USCIS U Visa Report: U Visa Filing Trends (April 2020) https://niwaplibrary.wcl.american.edu/pubs/u-visa-filing-trends; USCIS: Trends in U Visa Law Enforcement Certifications, Qualifying Crimes and Evidence of Helpfulness (July 2020) https://niwaplibrary.wcl.american.edu/pubs/u_visa_lea-certs-report; USCIS: U Visa Demographics: U Visa Report (March 2020) https://niwaplibrary.wcl.american.edu/pubs/uscis-u-visa-demographics; and USCIS Arrest Histories of U Visa Petitioners (April 2020) https://niwaplibrary.wcl.american.edu/pubs/uscis-u-visa-victim-arrest-histories.