A total of 3,671 law enforcement agencies (LEAs) were sent detainers by Immigration and Customs Enforcement (ICE) officials during fiscal year 2019. This figure is based on the latest detainer-by-detainer internal ICE records obtained and analyzed by the Transactional Records Access Clearinghouse at Syracuse University. According to its records, ICE sent detainers to LEAs in 2,158 counties in all 50 states.