Olympian Simone Biles is set to testify to the U.S. Senate regarding the investigation into the FBI’s botched handling of allegations against former USA Gymnastics doctor Larry Nassar. Biles and three other Olympic gold medalists will share their experiences and answer questions before the Senate Judiciary Committee, Democrats on the panel announced Monday. The hearing is set to take place on Sept. 15 in Washington. Biles, 24, will be joined by McKayla Maroney, 25, Maggie Nichols, 24, and Aly Raisman, 27. The committee is convening the hearing in light of the Department of Justice inspector general’s report that found the FBI failed to properly investigate reports that Nassar was abusing young athletes. Michael Horowitz, the inspector general (IG), concluded that FBI senior officials “failed to respond to the Nassar allegations with the utmost seriousness and urgency that they deserved and required, made numerous and fundamental errors when they did respond to them, and …