Parents of a girls’ ice hockey team in Chicago are suing the Amateur Hockey Association of Illinois (AHAI), an Illinois affiliate of USA Hockey, which governs organized hockey throughout the nation. The suit claims that AHAI is violating Title IX, which prohibits gender discrimination in education, including sports, by prohibiting the team from becoming a member of AHAI, effectively prohibiting the team from playing other girls teams in the state of Illinois. Pending the resolution of the litigation, the team continues to play against girls’ teams in other states and in a boys’ league in Chicago. Ice hockey is an increasingly popular sport among women. According to USA Hockey, there were 5,573 registered female players in 1991 and 39,000 in 2001.