This event represents routine diplomatic engagement between nations on a policy matter (fentanyl precursor chemicals) during ongoing trade negotiations. No constitutional damage drivers are triggered: no election interference, no rule of law violations, no separation of powers issues, no civil rights impacts, no institutional capture, no corruption, no violence. The mechanism is null because this is standard international diplomacy. The event generates modest media attention (B=11.52) due to trade war context and fentanyl crisis salience, but falls well below the B>=25 threshold. With A=0, no mechanism, and clear indicators of routine diplomatic process, this is definitively Noise - normal international relations that may generate headlines but has zero constitutional implications.