Replying to Dna libraries are they good or no?

So the US government is thinking about keeping a dna record of all newborn babies in hopes of being able to find missing children and criminals etc..

I dont know if i think its such a good idea. i mean if its used for just those purposes than i guess i dont really mind. of course id like a murderer put behind bars and someones child returned to them. but me and watching all those stupid movies. keep thinking about how it could lead to a whole new level of tracking and everyone would loose their own personal space.
besides what could happen if let say someone was murdered in an alleyway and you happened to walk by not noticing but a strand of your hair blew off and landed on the person. you could be blamed for murder wrongfully if they had nothing else to go on..
so what are your opinions/ do you think they should allow it or not?

Livin' n a traila! in da PemDOT baby!