It’s “toublemakers” are scattered among it military establishment and government. Cartels, gun-runners, politicians............all the same as their “troublemakers.” The Mexican military is as involved in the drug trade as any major cartel.
Invade the country to remove the “troublemakers” involves disassembling it’s entire current Federal structure. Upon doing so, there is not a ruling structure in place.
Invade and the country we know as Mexico collapses. There is nothing left. The only significant controlling structure left in the aftermath is....the United States.
It is scary, but, it’s damn obvious.
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Plus there's a lot of Mexican policemen to round up and execute.
But the reality is it's a failed state.
But... if you ever fight a war you need to do it the old-school way. No prisoners. And that goes for the WOT as well. Put all the top capos' heads on pikes in front of the White House.
Just my two cents.