. >> reporter: kristin wagner is a lawyer for the alliance defending freedom, a self-described conservativehristian nonprofit. they helped file the connecticut lawsuit last year and it marked a tipping point, sparking a nationwide debate about fairness and gender identity. in the past year and a half, seven states passed trans athletes bills. 28 more have legislation in the works. it's become a conservative rallying cry. >> candidate caitlyn jenner, all right. let me get to this issue. >> reporter: caitlyn jenner, now running for governor of california, once supports trans athletes rights to compete in the gender they identify with. but now the lifelong republican and former olympian has changed her position, speaking out on tmz. >> this is a question of fairness. that's why i oppose biological boys who are trans competing in girls' sports in school. it just isn't fair. >> we should be able to compete on a level playing field. and the policy that we have right now is making biological women be sidelined in our own support. >> she's forced to compete on an unfair playing field, so we're talk