Trump is wrong as usual. Most of this should not be political at all. It’s a free country. People have a right to present themselves as anything they like, including members of the opposite sex. Other people have a right to believe, disbelieve, approve of, disapprove of, praise, ignore, or think they are nuts for any of the things people present themselves as. Adults have a right to do as they will with their own bodies, including surgeries and medications to make them more nearly resemble a person of the opposite sex. It is none of the public’s business. Questions such as who participates in what women’s sporting events and who uses what public bathrooms are better decided case by case by the people putting on the events and owning the bathrooms than by winner take all political dictates. The exception is for minors. The surgeries and medications should be legally restricted by age, just as other activities, including things so simple as buying a case of beer, smoking cigarettes, or driving a car, are restricted to people old enough to make adult level judgments about them. The question of how old is old enough would be difficult and a decision somewhat arbitrary just as in other things.