The T word issue puts gay men into Animal Farm territory.
Collins, Robbie Rogers, Brittney Griner, and dozens of other athletes show their pride this month.
The proposed rule change would mirror similar policies adopted by the International Olympic Committee and NCAA.
On Friday, the transgender woman won her first professional mixed martial arts match since coming out in March.
Matt Mitrone was suspended for making transphobic remarks regarding recently out transgender fighter Fallon Fox
The elite-level fighter says, "I consider myself a woman. I happen to fall into the transgender category, but I rather describe myself as a woman first."