Strong bilateral economic integration under the USMCA, extensive cooperation on migration enforcement and counternarcotics, and Mexico's repeated public rejection of any foreign military presence underpin the 97.7% trader consensus against a U.S. invasion in 2026. Recent diplomatic exchanges have featured U.S. pressure for joint or unilateral action against designated cartels, alongside Mexican assertions of sovereignty and continued intelligence sharing that has reduced border flows. No territorial disputes or declarations of war exist, and historical patterns favor targeted operations or sanctions over large-scale intervention. Limited scenarios such as major cartel attacks on U.S. personnel, abrupt collapse of bilateral talks, or congressional authorization could still shift dynamics before year-end, though these remain low-probability triggers under current conditions.