The DNA screening thing is one thing, though it really should be something that the parents are at least told about. I can see the idea that asking isn't really workable because of the perception that lots of people won't understand what they're actually testing for and will knee jerk say no. That doesn't make the not asking right.

As far as storing the DNA? No I don't think it's right but I think at some point a registry of people's DNA/fingerprints etc is going to happen. Hopefully not in my lifetime but it will happen someday.