In a new post on To the Point, the Commonwealth Fund's Corinne Lewis, Yaphet Getachew, and Mekdes Tsega say that if the federal government decides to redefine gender as sex at birth, the change could effectively eliminate the ACA's federal protections for transgender people. "The move could have devastating implications for the health and health care of transgender and gender nonconforming individuals, placing an already vulnerable population at even greater risk," the authors say.