. >> reporter: chase strangio says this is the latest ground in battle culture wars being waged despitehe fact that few if any trans girls are competing in school sports. >> it's deeply hurtful and harmful to the transgendered young people constantly being scrutinized and attacked in this legislation, despite the practical realities which show after decades of data, trans people are not dominating sports at any level anywhere in the world. >> it's inappropriate. it's just not right. >> reporter: heated debate unfolding across the country, like here in the republican-dominated missouri legislature, on whether to restrict trans athletes' ability to compete. >> can i ask you a question? brandon bullware -- >> i know who you are. >> reporter: a father on a mission, brandon bullware lobbying on behalf of his trans daughter. >> for years i would not let my daughter wear girl clothes, play with girl toys -- >> reporter: his impassioned speech to missouri law patients going spiral on twitter with more than 7 million views. >> i forced my daughter to wear boy clothes and get short haircuts, play