> Otherwise you have just created two different classes of people with a near impenetrable barrier between them > anyone who does not have a National ID gets r

> Otherwise you have just created two different classes of people with a near impenetrable barrier between them > anyone who does not have a National ID gets removed from the country. From what can tell you inadvertently already solved the problem you're proposing. Of course you framed the problem wrong. National ID only works if everyone who is supposed to be inside the border has it. It doesn't work if Appalachians can't get it. But it works like a charm if illegal aliens can't.