The Department of Homeland Security (DHS) Office of the Inspector General (OIG) found that U.S. Customs and Border Protection (CBP) failed to issue A-numbers, or alien registration numbers to some migrants. A-numbers are used to track the immigration process for each individual. The OIG audit found that 107 of the 384 observed individuals were not provided with their A-number. The OIG further reported that the Border Patrol agents stated they focused on expediting processing to reduce overcapacity and as a result, failed to issue the number.
