What do you mean by "why not" ?

In USA, many states and big cities are collecting newborn DNA as well as any human who encounters police or government officials.

https://www.aclu.org/free-speech-technology-and-liberty-wome...

Because it is very unlikely that a newborn committed the murder?

But really, good question - why not?

They might commit some crime in 15-20 years' time though.

Criminals are actually fairly rare. Once everyone's genetic data is captured it's actually more likely that any given individual will be falsely accused of a crime by lazy cops and prosecutors. "You coughed on a window adjacent to the crime scene, some time in the week before the crime! Guilty!"

I absolutely agree, and I find this sort of total surveillance mentality completely abhorrent. My comment was mostly meant to illustrate the sort of reasoning that goes with people seriously suggesting that collecting newborn DNA is a good idea.

Blood test of all newborn are saved in Sweden since 1975 for research purposes. The police accessed this data to solve the murder of Anna Lindh (Vice Prime Minister) in 2003.