What was once a quiet corridor of legal cooperation between two neighboring nations has become another casualty of an escalating trade conflict. The U.S. Justice Department's antitrust division was directed this week to suspend all coordination with Canadian authorities, a move that — whatever its precise scope — reveals how deeply political tensions can reach into the technical machinery of governance. As tariffs mount and symbolic gestures like renaming Lake Ontario harden the atmosphere, the United States and Canada find themselves renegotiating not just trade terms, but the very texture of