Sorry that I confused you for DJ.
For Guzman's crimes, it's entirely possible for either government to legally kill him.
But not in a cruel and unusual fashion. They can't make a blood eagle out of him under the law. If you're trying to reestablish law and order, you can't just flout it, or you defeat your own purpose. Sometimes exceptions have to be made, but going as far as public spectacle torture-execution is counter-productive.
The moral argument is entirely relevant. BECAUSE they are an elected government, it means they SHOULDNT torture/rape/castrate, EVEN IF the enemy does. The Cartels make people fall in line with shows of force like you suggest doing with Guzman. If the government adopts such methods, they make themselves (potentially) as much a threat to their own people as the Cartels. And that's the opposite of what a Government is for.
Besides, the Cartels are always doing such things to try to scare
each other. What makes you think the Government doing it would have any different effect than it already does?
Unless you're sympathetic to drug cartels and their 'rights'
Believe it or not, Mexico/US actually have some authority here to dictate terms to narco-terrorists in their borders, and if the population agrees and accepts the methods then.. Oh well.
Before you go the ad hominem route, let me remind you that
I am utterly against the Cartels and what they stand for. But I am utterly for the equality of all people under the law. If someone does something horrible, let them be punished as the law dictates, not in some extravagant method conceived in rage. If the punishment does not solve the problem, amend the law.
When it's OK for the government to use torture to send a message to one group at home, it's not a far leap before it can be used on other groups. Doing such things puts the possibility on the table that the law will kill them, not protect them.