system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: The US should declare war on the cartels, end the domestic war on drugs, and help stabilize/invest in Mexico.

The single greatest form of external-terrorism in the United States is the introduction of heroine, coke, meth, and opiates like fentanyl to communities. People who take these are more likely to commit violent crimes, become homeless, have children that go to orphanages or grow up hungry. These drugs tear apart families, ruin lives, and the money spent on them goes to terrorists who basically own Mexico now. 

When you take down low level drug dealers, there will always be more to take their place. Its like trying to shave someone's head by plucking out hairs individually. When you completely destroy the infrastructure and capabilities of these drug running operations, it will take years and years for them to rebuild it. The people with the know-how will be gone.  Those who come after them will live in fear of what might happen if they get caught. 

The US military should seek approval from the Mexican president to seek out and destroy the cartels by any means necessary. The cartels are powerful compared to the local police and government, by comparison, but are NOTHING compared to an actual military. I honestly believe you would spend less to destroy them than you would trying to use the DEA to enforce every single drug user in America. 

After the Cartels are gone, we should invest in these communities in Mexico to help grow their economies and give young men less incentive to join a cartel. It sounds counterintuitive, but by investing in Mexico. I believe the US would actually save billions in the long term by treating drug use as an addiction, mitigating the DEA's budget, and helping local law enforcement see addicts as just that, addicts, not criminals. Also, if Mexico has a stronger economy, there will be less reason for people to try and immigrate to the United States.
gpt
The US isn't exactly trusted by the Mexican community right now.

The Mexican people aren't going to be rolling out a welcome mat, thanking us for saving them.

Police action in a foreign country is hard.  How many of our armed forces know Spanish?  How would our armed forces identify targets?

When you're frustrated and don't see good options, force feels like the solution.  It is the option that we jump to when we don't see good options and want to force the world to be the way we want it.  But, in the real world, violence isn't as effective as we imagine and has many unintended consequences.