A biologically male marathon runner who identifies as a transgender woman will compete in the USA Olympic trials later this month. It's a growing trend that's fueling a movement among female athletes to fight for their rights. In Connecticut, the families of three female high school runners filed a federal lawsuit this week, trying to block transgender athletes in the state from taking part in girls' sports. They argue that allowing athletes with male anatomy has deprived them of track titles and scholarship opportunities. Reporter Heather Sells has been following this story. She's on today's CBN News Daily Rundown.