I was thinking about that.
If you don't recognize the legitimacy of the US gov't, can you get all uppity about its borders? 'Illegal' refers to a violation of the laws held by the country you don't think exists. Same with 'alien'.
The stupid is strong with him. He states that he doesn't recognize the federal gubmint, then in the next sentence rambles on about his second amendment rights. it's basically a wild west version of idiocracy.