Recent political debate over transgender military service and gendered bathroom use highlights a dramatic increase in salience over transgender issues in the US. In this essay, we examine a potential new front in the culture wars by reviewing recent empirical research in social science on the politics of transgender rights in the context of morality politics. Research on morality politics has often focused on LGBT rights, with an emphasis on gay and lesbian rights and little attention to transgender issues. We highlight the progress of research on transgender issues in the US, focusing on the study of attitudes about transgender people and rights, transgender rights in states and localities, and broader findings affecting transgender popula...