The Trump administration is investigating the Oregon Department of Education after receiving a complaint from a conservative non-profit group alleging the state was violating civil rights law by allowing transgender girls to compete on girls sports teams. The U.S. Department of Education’s Office of Civil Rights opened the investigation based on a complaint saying high-school aged female athletes in the state had lost medals and other competitive opportunities to transgender athletes. The probe is the latest escalation in the Republican administration’s effort to bar transgender athletes from women’s sports teams nationwide.