Thousands of children were recently separated from their families on the Texas border. Too many children have undergone the trauma of preventable family separation, which cannot be undone. NICHQ's new Chief Health Officer, Elizabeth Coté, MD, MPA, has witnessed the devastating effects of caregiver-child separation in communities across the country and across the world. In this article, she speaks up about the harm of that separation and urges us to remain vigilant about keeping families together.