Members of FINA, swimming’s world governing body, voted on Sunday to adopt a new policy—effective Monday, June 20—that bars transgender women from competing in women’s events if they have experienced any part of male puberty.Under the policy, only swimmers who transitioned before the age of 12 will be permitted to compete in women’s events.Sharron Davies, a former British Olympic swimmer, praised FINA’s move.”I can’t tell you how proud I am of my sport @fina & @fina_president for doing the science, asking the athletes/coaches and standing up for fair sport for females,” Davies wrote on Twitter. “Swimming will always welcome everyone no matter how you identify but fairness is the cornerstone of sport.”I can’t tell you how proud I am of my sport @fina & @fina_president for doing the science, asking the athletes/coaches and standing up for fair sport for females.