The decision by President Donald Trump to exclude transgender girls and women from female sports has triggered what is likely to be a long, complex clash with global sports authorities as the United States counts down to the 2028 Los Angeles Olympics.

President Trump signed an executive order Wednesday barring transgender athletes from competing in girls’ and women’s sports, fulfilling a key campaign promise that also could complicate the

White House officials argue the measures are not aimed at stopping transgender people from athletic participation, but at ensuring that they do not have a biological advantage in sports competitions.

Candidates to succeed Thomas Bach as president of the International Olympic Association have outlined their views on transgender athletes competing against women and in the Olympic Games, an issue that was the subject of an executive order issued by U.

Before signing an executive order Wednesday to try to ban transgender women from competing in women’s sports in schools and other settings, President Donald Trump repeated a lie he told last year. He asserted that two Olympians who won gold in women’s boxing events last year were men who “transitioned.