My latest WSJ OpEd went live this evening online and will be in the print edition tomorrow. Here it is in full for Just the Facts subscribers (note: The VoiceOver for this article is an AI automated voice)

Protecting women’s sports should be at the top of the Trump administration’s to-do list. The issue gained national attention in 2022, when male swimmer Lia Thomas, who had been ranked 65th among men in the nation for the 500-yard freestyle, won an NCAA swimming championship while competing as a woman. A United Nations report last month revealed that men identifying as women have won 890 medals in 29 female-only sports worldwide.

The Education Department in April proposed a regulation adding “gender identity” as a protected category to Title IX rules. Title IX, enacted in 1972, bans sex discrimination by federally funded educational institutions. The new rule, which went into effect Aug. 1, allows males unfettered access to female locker rooms and bathrooms. It also signals approval of men participating in and dominating women’s athletics.

Republicans tried unsuccessfully to pre-empt the Title IX changes. In 2023 the House passed the Protection of Women and Girls in Sports Act, which defined sex as “based solely on a person’s reproductive biology and genetics at birth.” When it got to the Senate, Alabama’s Tommy Tuberville—who began his career as a high-school girls’ basketball coach—asked for unanimous consent. Hawaii’s Sen. Mazie Hirono objected, saying it would bar people from playing sports “consistent with their gender.” Majority Leader Chuck Schumer stymied the bill. In July Sen. Cindy Hyde-Smith (R., Miss.) and Rep. Mary Miller (R., Ill.), introduced a resolution under the Congressional Review Act to reverse the Biden regulation. It passed the House along party lines, 210-205. Mr. Schumer again made certain it died in the Senate.

Federal courts blocked the Biden administration rule in 26 states. The Supreme Court upheld these injunctions and may eventually take up the new rule itself. The new Republican-controlled Congress could settle the matter quickly by passing a bill to reverse the Biden Title IX modifications. It would sail through the House, maybe even winning some support from Democratic representatives who saw the potency of the issue in the November election. Massachusetts Rep. Seth Moulton has said that his party is “out of touch” and that he doesn’t want his daughters playing in sports against males.

New Senate Majority Leader John Thune could force Democrats to vote on the issue. It takes 60 votes to overcome a filibuster. Republicans will have 53, and the new Senate will have 10 members from states Donald Trump carried. Should the effort to restore Title IX stall in the Senate, Mr. Trump can issue an executive order barring institutions that receive federal funding from allowing male athletes to participate in athletic programs designed for girls and women. It will get tied up in litigation, but at least the federal government will be on the right side of the issue. The Trump administration should be at the forefront to restore fairness and demonstrate quickly that elections have real consequences for protecting women’s rights.

Mr. Posner is author of “Pharma: Greed, Lies and the Poisoning of America.”

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