It's there becasue some States allow non-binary or the person NOT to list their sex on their ID. The only time non-binary is to be checked is if one of those two things has occurred. The info from the government issued ID has to match what's entered into the NICS system so they had to take that into account when they redid the forms back in November of 2020.That’s the question that I hate to see. How is that relevant in this situation? It is essentially leaving that question blank,