(The Center Square) - The U.S. Supreme Court heard arguments in two cases on transgender athletes participating in girls' and women’s sports. Advocates for state laws banning transgender participation said the definition of "sex" under Title IX will be central to a favorable ruling from the court. Little v. Hecox and B.P.J. v. West Virginia dealt with whether preventing transgender athletes from competing in girls' and women's sports violated Title IX, a federal law prohibiting sex discrimination.