Aly Raisman spent months urging the U.S. Olympic Committee and USA Gymnastics to get serious about taking a long hard look into how Larry Nassar's abusive conduct was allowed to run unchecked for so long.

Frustrated by what she considers a lack of progress, the six-time Olympic medalist is hoping she can get some answers in court.

Raisman has filed a lawsuit against both organizations, claiming they "knew or should have known" about abusive patterns Nassar, a disgraced former national team doctor now in prison for sexually abusing young athletes.

Raisman filed the lawsuit in California on Wedn...