Why we don't want China to have U.S. DNA markers for everyone:

 It's basically because it is now possible to poison only one person in a room with a custom poison that only will kill that one person. By studying someone's DNA no one else would die in the room from a drink or food but that person.

Which is one reason why you don't want China (or any other nation) to have access to people's dna markers of people here in the U.S.

My daughter was telling me that this is possible now from an article she read.

So, this is even scarier in it's own way than multi million dollar drones blowing up people by targeting their cell phones.

Which is why Terrorists don't usually carry cell phones or smart phones because they don't want to be blown up from a predator Drone sending a hellfire missile to blow up them and their families in their cars or trucks mostly in the middle East Somewhere.