Should transgender athletes be allowed to compete with those of the gender they identify with or must they only compete with athletes who share the gender they were assigned at birth? Are laws that ban transgender women from participating in women's sports fair? LGBTQ+ activists have described criteria limiting transgender athlete involvement in gendered sports as "discriminatory." Lia Thomas made headline news and stirred debate when she competed in swimming nationals as a transgender woman. Dr. Phil, along with Layne Ingram, a transgender man and basketball coach, and Olympic swimmer Nancy Hogshead-Makar, an advocate for girls and women in sports and CEO of Champion Women, discuss what they believe is right and fair. Then, Riley Gaines, who competed against Lia Thomas, gives her perspective on how she felt after their race. The big question is: what does the science say? Harvard professor Dr. Carole Hooven breaks it down.