Does anyone know which professions in the US that are government related that the DNA information is preserved? I would surprised if there are not positions whi

Does anyone know which professions in the US that are government related that the DNA information is preserved? I would surprised if there are not positions which require it. Surely law enforcement is keeping the records on some convicts. Do they even need a warrant to obtain it? what I am leading up to is I can easily see where it becomes a requirement for others and it might start off with police forces because of the high visibility of abuse issues. From there it is not a big leap to other high visibility groups to include military and eventually everyone gets lumped in for medical safety and such. It isn't that we need to be scared of what 3rd party sites do, it is that we need to be ahead of the game and limit how government can gain and maintain this information