In 1991 Argentina passed the world's first national gender quota. Decades later Mexico has a gender-parity Congress and its first woman president, while the United States ranks 84th at 28.8 percent women in the House, with no woman president ever. The story concerns machinery, party lists and enforceable quotas, and what engineered representation can and cannot fix.
Scholars question whether descriptive representation becomes substantive power, with Nicaragua a counterexample. Whether Sheinbaum's presidency is independent power or continuity of her predecessor's project is also contested.