The US Department of Justice has instructed antitrust officials to temporarily suspend cooperation with the Canadian government, according to reports from the Wall Street Journal. This action, revealed through internal emails, comes as tensions escalate in a burgeoning trade dispute between Washington and Ottawa. The move represents a significant hardening of stance from the US, potentially impacting ongoing investigations and legal collaborations. Details of the specific dispute triggering this suspension remain limited, but it signals a deeper rift between the two nations. Experts suggest this could lead to further retaliatory measures and increased economic uncertainty. The suspension impacts collaboration within the antitrust division, raising concerns about future cross-border legal proceedings. This development adds to a series of recent disagreements between the US and Canada.