Our understanding and treatment of gender in the United States has evolved significantly over the past four decades. Transgender individuals in the current U.S. context enjoy more rights and protections than they have in the past; yet, room for progress remains. Moving beyond the traditional male–female binary, an unprecedented number of people now identify as transgender and nonbinary. Transgender identities are at the forefront of gender policy, prompting responses from public agencies at the local, state, and federal levels. Because transgender individuals face increased rates of discrimination, violence, and physical and mental health challenges, compared to their cisgender counterparts, new gender policy often affords legal protections as well as identity-affirming practices such as legal name and gender marker changes on government documents. These rights come from legal decisions, legislation, and administrative agency policies. Despite these victories, recent government action targeting the transgender population threatens the progress that has been made. This underscores the importance of comprehensive policies and education about transgender identities to protect the rights of transgender people.