I don’t know who would win because the cartels are way better funded, equiped and trained; but they are way less psychotic and bloodthirsty than the yanks
In any case, nobody wants their employees fighting each other so HR is gonna cool down the situation
There’s a massive tunnel network for miles around the border (I know because I saw it in fast and furious).
But seriously, American troops getting picked off in the desert has been our doctrine for 30 years, it’s just come home.