Well the Muslim towelheads were pretty good at this 20 yrs ago so not surprised a crew of braceros could make it work too.
They know how to fight, we don’t.
The powers that be know who the Cartel bosses are and where they live. It would be quite simple to track their movements, wait until they are at home and take them out. Family, servants and staff will be acceptable collateral damage. Do the first few and the others will relocate and find new lines of work.