text:  Another organization called World Aquatics that governs most international swimming competitions also issued a statement telling NPR its executive director has received a subpoena to serve as a witness in the case and is negotiating to avoid appearing before a grand jury. The Justice Department declined to confirm an investigation is underway. Representative Kathy Castor of Florida is among the lawmakers who've been urging the DOJ to investigate WADA. She spoke at a hearing last month.