The Department of Homeland Security continues to push back against immigrant groups and defense lawyers who claimed federal immigration officers did not have legal authority to detain a recipient of the Deferred Action for Childhood Arrivals program in Seattle last Friday.

U.S. Immigration and Customs Enforcement agents arrested “Dreamer” Daniel Ramirez-Medina during national immigration enforcement operations last week. The incident, reported on Tuesday, is the first known time officers have taken into custody a non-U.S. citizen who had legal permission from the Obama administration to remain in the country, prompting immigrant rights’ groups to worry that President Trump has begun to deport the 750,000 DACA recipients.