Every organized sport has some sort of governing body, and that body is concerned with making sure competition is fair. (And taking bribes, right, FIFA?) The people who organize the sport should be able to determine what is fair for their sport. Often, there will be some scientific basis for allowing some people and not allowing others, based on hormones or something like that.

The decisions should be made by people who know the sport and decide what fair competition might look like, not by asshole politicians looking to push an agenda.