Cindy noticed something in the letter..and Lion's Cub picked it up..
Good pickup on the The United States strives to provide freedom for their people, Cindy. I agree that this person is not a US citizen, or least doesn't consider himself one.
That was one of the first odd things I noticed in the letter , too, so Cindy might have a good point here. I didn't get any strong feelings one way or the other. It seems when I was younger I used that pronoun(?) "their" when I didn't know a better word to use. Had I written that garbage, I might have used "its people" or probably "her people" or "our people" which could point to either a noncitizen or a citizen.
The person definitely sounds alienated (and delusional) and could very well be a noncitizen. I can't get a particular sense of it one way or the other.
They seem to like interconnected rural roads, so if they keep to their mo and strike again, I would expect it to be in an area where there are more state and local roads which have been mapped rather than hitting way out in the boonies. They may be using roadmaps or an atlas. FWIW.