Carlyn Williams and her spouse Polyxenia Pantos were threatened by a caller claiming to represent the Department of Homeland Security after Pantos filmed ICE agents during a January 2026 enforcement operation in South Portland, Maine. The caller warned that people who film such activity "might get added to a domestic terrorism watchlist." The couple joined a federal lawsuit, originally filed by two other Maine residents, alleging DHS illegally collected data and threatened observers in violation of their First Amendment rights; DHS has denied operating any such database, and a judge denied the plaintiffs' request for a temporary restraining order in March. In an amended complaint, the couple's attorneys say that on March 16, while returning from a trip to Quebec City, Williams and Pantos were detained for an hour at the border by a Customs and Border Protection agent who requested registration information for Williams' vehicle despite the couple traveling in Pantos' car, which they argue indicates they were placed on a government watchlist.