(FILES) This file photo taken on May 5, 2016 shows a gender neutral bathroom at a restaurant in Washington, DC. President Barack Obama's administration fired the latest salvo May 13, 2016 in a heated battle over the rights of transgender Americans, telling schools they must allow students to use bathrooms of their choosing.In a letter to school districts and universities, officials from the Justice and Education Departments outlined how to prevent discrimination against transgender students and what Attorney General Loretta Lynch described as &quot;unjust&quot; school policies.  / AFP PHOTO / MANDEL NGANMANDEL NGAN/AFP/Getty Images Photo: MANDEL NGAN, AFP/Getty Images