The largest DNA database not protected by any privacy law, that is the FBI DNA database of over 6.7 million profiles is in the throes of a new spurt of growth. Until now, the federal government genetically tracked only convicts. But starting this month, the Federal Bureau of Investigation will join 15 states that collect DNA samples from those awaiting trial and will collect DNA from detained immigrants — the vanguard of a growing class of genetic registrants.

I wonder what next?