It's already being done with how the Federal government will list people's genders and which prisons they're placed in. They're only going by what is on the person's birth certificate now, which has to be particularly problematic for intersexed people since the doctors can end up just guessing a gender in some of those cases.
You and GreyOmega are both morons. This isn't about politics, it's a joke that 3 of the 4 present are futa, but you'd see that if you looked at the tags. But no, your brains have both been thoroughly corrupted by the cancer that is politics. God I hate politics, and I hate people like you that have to try to make literally everything about it.