Spanning from October 2020 through the end of 2024, the records show that CBP swabbed the cheeks of between 829,000 and 2.8 million people, with experts estimating that the true figure, excluding duplicates, is likely well over 1.5 million. That number includes as many as 133,539 children and teenagers. These figures mark a sweeping expansion of biometric surveillance—one that explicitly targets migrant populations, including children.
The DNA samples are registered in the Combined DNA Index System, or CODIS, a database administered by the FBI, which processes the DNA and stores the resulting genetic profiles. A network of criminal forensic databases, CODIS is used by local, state, and federal enforcement agencies to match DNA collected from crime scenes or convictions to identify suspects.