Officials in the Department of Health and Human Services are looking to reduce the number of temporary and permanent shelters for illegal immigrant children, in the wake of a dramatic drop in illegal immigration at the southwestern U.S. border in the last few months.

An HHS official testified Wednesday at the Senate Judiciary Committee that the Department of Homeland Security refers thousands of children to HHS each year after they are apprehended at the border. In fiscal year 2016, for example, 59,170 kids were referred to HHS’s Office of Refugee Resettlement.