Trader consensus against a U.S. invasion of Mexico in 2026 reflects sustained bilateral cooperation on migration enforcement, fentanyl interdiction, and cartel targeting through intelligence sharing and extraditions rather than unilateral military action. Mexican President Claudia Sheinbaum has repeatedly rejected U.S. troop deployments on Mexican soil while advancing joint operations, and U.S. officials have alternated between praise for results and limited strike threats without crossing into invasion planning. Deep economic ties under USMCA, active diplomacy via the State Department, and domestic political costs on both sides further constrain escalation. Limited border troop deployments and surveillance flights address enforcement gaps but do not signal broader territorial operations. Late-year shifts could still arise from sudden breakdowns in cooperation, major cross-border incidents, or policy redirection, though no such triggers have materialized.