I’m no expert in law outside the US but i know it would take the government wanting to prosecute him. They may see it as trivial that some dude is submitting fake documents to court for something they really don’t care about and which, in their (dumb) opinion, has no effect on the public. They probably just don’t want to spend the money and time to prosecute. Although I am surprised the judges he’s tried to fool haven’t had something done about it. Judges, at least in the US don’t stuff like that lightly and let it slide.