Sex eligibility rules for female athletes are complex, legally difficult

Algeria's Imane Khelif gestures after defeating Thailand's Janjaem Suwannapheng in their women's 66 kg semifinal boxing match at the 2024 Summer Olympics, Aug. 6, 2024, in Paris. FILE - Caster Semenya of South Africa competes during a heat in the women's 5000-meter run at the World Athletics Championships on July 20, 2022, in Eugene, Ore.

Women's boxing at the Paris Olympics has highlighted the complexity of drafting and enforcing sex eligibility rules for women's sports and how athletes like Imane Khelif of Algeria and Lin Yu-ting of Taiwan are left vulnerable in the fallout.