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 nation’s role as host of the next Summer Olympics.

In a speech before signing the document, Trump said he wants the International Olympic Committee to change everything “having to do with this absolutely ridiculous subject.”

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.