Washington state’s proposal, introduced last year by Let’s Go Washington, a political action committee founded by conservative hedge fund manager and multimillionaire Brian Heywood, is among several this fall asking voters to limit transgender athletes’ participation in school sports. Similar initiatives will appear on the ballot in Arizona and Colorado, and another, in Nebraska, is pending approval from the secretary of state. (Nebraska law already prohibits trans students from competing in line with their gender identity, which the ballot initiative aims to codify in the state constitution).