I mean, come on. Do you really think this sort of thing is sensible to do? If you read the first article, you will know that the US laws, regarding scanning/fingerprinting/probing of foreigners coming to the country, have only found 1000 Visa-Over-stayers at a price of $15.000.000 a pop. Nice balance.
The second article gives reason for concern regarding every 5+ year old. If you show signs of criminal-in-the-future-behavior, you should have your DNA obtained and cataloged for future scrutiny every time there’s the least suspicion that you might have committed a crime, or even been near one at any given time. (Like a burglary in your neighborhood.)