In this file photo taken on August 21, 2008 Diana Lopez of the US (R) receives instructions from her coach and elder brother Jean before her fight against Azize Tanrikulu of Turkey in the quarter-final women's -57 kg taekwondo match during the 2008 Beijing Olympic Games in Beijing. Four women athletes accuse the US Olympic Committee and USA Taekwondo of sex trafficking in a federal lawsuit, alleging they were forced to train and travel with known sexual predators.The lawsuit cites former US Olym