The U.S. Department of Homeland Security is defending its policy of having Immigration and Customs Enforcement officers arrest people at their immigration court hearings after a group of immigrants and advocates filed a class-action lawsuit that seeks to stop the practice.

Three asylum-seekers were arrested Friday directly after court hearings at San Francisco immigration court, continuing a weeks-long pattern of federal agents waiting just outside courtrooms and arresting people as they step into the halls.

Tensions. Unease. Tears. Migrants, lawyers and court watchers have seen all that and more since ICE began making arrests in court hallways in May.