Mexico tension spills north after elite cartel leader killed
Mexican army killed 'El Mencho,' head of Jalisco New Generation Cartel, triggering unrest that matters for U.S.-Mexico border dynamics.
Why it matters
Violence and power shifts in Mexican cartels affect U.S. border security, drug flows, and communities on both sides of the line.
The big picture
A shifting cartel map this week could reshape border policy discussions in Washington.