The U.S. government will soon begin collecting DNA samples from all citizens arrested in connection with any federal crime and from many immigrants detained by federal authorities, adding genetic identifiers from more than 1 million individuals a year to the swiftly growing federal law enforcement DNA database.
The policy will substantially expand the current practice of routinely collecting DNA samples from only those convicted of federal crimes, and it will build on a growing policy among states to collect DNA from many people who are arrested. Thirteen states do so now and turn their data over to the federal government.
