The State Department has an office that hunts German war criminals. Bureaucracies being what they are, the office will exist into next century when any surviving German prison guards will be 200 years old. From time to time the State Department claims to have found a lowly German soldier who was assigned as a prison camp guard. The ancient personage, who had lived in the US for the past 50 or 60 years without doing harm to anyone, is then merciless persecuted, usually on the basis of hearsay. I have never understood what the State Department thinks the alleged prison guard was supposed to have done–freed the prisoners, resign his position?–when Prussian aristocrats, high-ranking German Army generals and Field Marshall and national hero Erwin Rommel were murdered for trying to overthrow Hitler.
What the State Department needs is an office that rounds up American war criminals.