US President Trump’s administration has intensified pressure on Mexico for expanded cartel operations, including a recent memo proposing US personnel accompany raids on Mexican soil to deliver visible security gains ahead of the November 3 midterms. Mexican President Sheinbaum has repeatedly rejected any foreign military presence or strikes inside the country, citing sovereignty, while accepting intelligence sharing and coordination. The United States has conducted multiple lethal strikes on suspected drug vessels at sea in the Eastern Pacific and Caribbean, but no qualifying land strikes on Mexican territory have occurred. Recent cartel-related violence, such as the Matamoros clashes, and ongoing USMCA trade talks add context, yet trader consensus reflects significant diplomatic and legal barriers to a unilateral US strike by year-end. Post-midterm policy shifts could still alter the trajectory.