NPR asked immigration law experts to explain what we know is and isn’t legal when it comes to immigration enforcement. The Department of Homeland Security says federal agents arresting immigrants are hiding their faces for their own safety. Are immigration enforcement agents allowed to wear masks or otherwise refuse to identify themselves? Immigration agents can, and have, made arrests in those types of areas, such as the lobby of an apartment building that’s open to the public or parking lots. However, ICE agents have used deceptive practices to gain entry into a person’s home or business to make arrests without a warrant, according to a lawsuit filed in 2020 against DHS.