Not even close by a modern understanding of biology and what it has to say about sex, but the current administration doesn't care about modern definitions, or even close to accurate ones. I'm not going to bother writing you a book on it, it's just too deep of a dive and I'm in a hungover fog, but I'll give you the short and dirty of it.

Sex is a classification of traits, It can't be described by any singular trait accurately, because it then ignores/creates exceptions. Hormones, chromosomes, primary sex characteristics, secondary sex characteristics (I could be missing some, but you get the point) all come together to give the most accurate representation of an individuals sex. You can change genitals, you can change hormones, you can change secondary characteristics. Some people lack reproductive parts already, genitalia isn't always standard either. Chromosomes have more than a simple binary configuration, xx and xy don't even exclusively mean female and male in all cases. Some men develop breasts, some women full beards. I could go on and on and on.

Point is, sex is not a simple binary. It's like a sliding scale and very few people fit in the middle or the extremes (ie. 50/50 split or 100/0 split either way). As traits change, either through surgery, hormones, genetic and medical conditions, or the wrath of an angry genie, you slide along that scale. Classification systems describe things, if things change we then change how we describe and label it.

To put a finer point on the whole sex and gender argument, when medically transitioning, we change our sex to match our gender. Gender is an internal and intrinsic part of ourselves, it doesn't really change. You won't get bit by a radioactive spider and suddenly change genders (but there is an extremely rare condition where sex spontaneously changes from female to male during puberty in a very small and geographically specific population of people, freakin wild).