Surely the cost of these DNA tests of prisoners is vastly smaller than the cost of keeping innocent people in prison for god knows how long a period of time.
It would have to be.
Secondary question:Should the DNA data of the prisoners that "opt in" to this potential innocence program* be checked against the unsolved crime registry?
I say it should be. While I think protecting the innocent is more important than punishing the guilty, I think punishing the guilty is something we don't do hard enough when we
know there is guilt. There is no reason at all that repeat violent offenders should be allowed to walk around while a dude slinging $40 baggies of pot at a Community College rots his best years away sharing a bunk with Herbert the Pervert.
*I'm assuming we'd give the prisoners a chance to "opt out" of this to protect their civil rights, although a good argument could sway me here I think